CN109468485A - A kind of preparation method of nanometer of endogenous TiC particle reinforced aluminum alloy plate - Google Patents
A kind of preparation method of nanometer of endogenous TiC particle reinforced aluminum alloy plate Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
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- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0052—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only carbides
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- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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Abstract
The invention discloses the preparation methods of a kind of nanometer of endogenous TiC particle reinforced aluminum alloy plate, comprising: step 1, preparation 6061 aluminum alloy melts of melting, and cast after nano TiC ceramic particle intermediate alloy is added；Step 2 rolls 6061 aluminium alloys containing nano TiC ceramic particle intermediate alloy of casting；Step 3 is heat-treated 6061 aluminium alloys by rolling, obtains a nanometer aluminum alloy plate materials for endogenous TiC particle enhancing.Using interior raw nano-TiC particle enhancing 6061 aluminum alloy plate materials of rolling compared with non-Jia Neisheng nano-TiC particle rolls 6061 aluminum alloy plate materials, the crystallite dimension that 6061 aluminum alloy plate materials of nano-TiC particle are added obviously is refined than 6061 aluminum alloy plate materials of non-plus nano TiC ceramic particle, and room temperature tensile intensity and room-temperature yield strength are improved and provide important technical support for production high-performance aluminum alloy sheet.
Description
Technical field
The present invention relates to the preparation methods of a kind of nanometer of endogenous TiC particle reinforced aluminum alloy plate, belong to aluminum alloy plate materials
Preparation field.
Background technique
Aerospace, the fast development of the industrial circles such as automobile result in now to lightweight, the need of high-performance metal materials
Ask further urgent.Aluminium alloy is due to its specific strength with higher and lower density and by extensive concern and research.
Due to the as-cast structure coarse grains of aluminium alloy, will be faced with influences its subsequent process and processability, so passing through
The pattern of regulation as-cast structure is the effective means for improving its military service performance and properties for follow.Often as-cast structure faces
Coarse grains, be segregated serious problem, such issues that will lead to the deformability of cast alloy and intensity be not achieved it is subsequent
The production of processing needs, and the means for improving aluminium alloy as-cast structure in industrial production at present usually carry out big plasticity in advance and become
Shape, then by subsequent annealing process to achieve the purpose that recovery and recrystallization occurs, to obtain lesser group of crystallite dimension
It knits.This refined cast structure's technique effectively improves the deformability and intensity of aluminium alloy, to reach production requirement.
But fail since large plastometric set frequently can lead to the cracking of material, to reduce production efficiency, make it is subsequent secondary plus
Work becomes difficult.
In conclusion the grain structure of refining aluminum alloy plate, improves mechanical progress and secondary operation toughness, reduces its system
This is caused, improving equipment work efficiency is aluminum alloy plate materials industry significant problem urgently to be resolved always for many years；Aluminium alloy plate
The improvement of material grain structure is also beneficial to improve the performances such as its fatigue, impact while improving tensile property.Due to aluminium alloy
Plate is widely used, and comprising fields such as automobile, aerospace, high-speed track passenger cars, therefore, develops novel high-performance aluminium alloy plate
Material has great application prospect.
Chinese patent publication No.: CN102260814A, " a kind of in-situ nano ceramic particle reinforced aluminium base composite material and its
In preparation method ", using conbustion synthesis chemical reaction method and hot-pressing technique, prepare in-situ nano TiC ceramic particle enhancing aluminium or
Al alloy composite, once at 100 nanometers, weight percent content exists the size of the TiC ceramic particle of in-situ reactive synthesis
3-30%.Interior raw nano TiC ceramic particle In-sltu reinforcement of the invention rolls 6061 aluminum alloy plate materials, by adding above-mentioned quality
The nano-scale TiC ceramic particle intermediate alloy that percentage is 30% prepares raw nano TiC ceramic particle enhancing 6061 in one kind
Aluminum alloy plate materials have obtained following unexpected effect.
Summary of the invention
The present invention has designed and developed the preparation method of a kind of nanometer of endogenous TiC particle reinforced aluminum alloy plate, passes through addition
Intermediate alloy containing nano TiC ceramic particle, and its content is adjusted, realize the refinement to aluminum alloy plate materials, and show
It writes and improves its room temperature tensile intensity and yield strength.
Technical solution provided by the invention are as follows:
A kind of preparation method of nanometer of endogenous TiC particle reinforced aluminum alloy plate, comprising:
Step 1, preparation 6061 aluminum alloy melts of melting, and cast after nano TiC ceramic particle intermediate alloy is added；
Step 2 rolls 6061 aluminium alloys containing nano TiC ceramic particle intermediate alloy of casting；
Step 3 is heat-treated 6061 aluminium alloys by rolling, obtains nanometer aluminium of endogenous TiC particle enhancing and closes
Golden plate material.
Preferably,
The weight percent of the component of 6061 aluminium alloys of the melting are as follows: Mg:0.87%；Si:0.55%；Fe:0.59%；
Cu:0.36%；Mn:0.15%；Cr:0.17%；Zn:0.23%；Ti:0.16%；Surplus is Al；
Wherein, the additional amount of the nano TiC ceramic particle intermediate alloy is the 0.1- of 6061 aluminum alloy melts of the melting
1.0wt.%.
Preferably, the mass fraction of the nano TiC ceramic particle intermediate alloy is 30%.
Preferably, the additional amount of the nano TiC ceramic particle intermediate alloy is 1.0%.
Preferably, the step 1 specifically includes:
Step a, 6061 aluminium alloys are put into smelting furnace, temperature is increased to 800-850 DEG C, and 6061 aluminium melted close
Golden liquid；
Step b, it is put into after ultrasonic probe is preheated and takes out, preheating time 5-10min is closed to 6061 aluminium of melting
Nano TiC ceramic particle intermediate alloy is added in golden liquid, is ultrasonically treated after mechanical stirring 2-3min；
Step c, deslagging agent is added, obtain except casting after Slag treatment containing conjunction among nano TiC ceramic particle
6061 aluminium alloy castings of gold；
Wherein, the additional amount of deslagging agent is 6061 aluminum alloy melt 0.05-0.1wt.% of the melting.
Preferably, the step 2 specifically includes:
After casting cutting, it is put into nitrogen oven and carries out homogenization heat treatment, rolled, roll five altogether
It is secondary, the aluminium alloy after being rolled；
Wherein, each volume under pressure of preceding four-pass is 0.9-1mm, and the 5th passage volume under pressure is 0.1-0.2mm, and total volume under pressure is
70%.
Preferably, the size after the casting cutting are as follows: long: 48-50mm, wide 20-22mm, high 6-6.2mm are described equal
It homogenizes in heat treatment process, heating temperature is 565-570 DEG C, soaking time 6-8h.
Preferably, after the heat treatment of casting homogenization using 600# and 2000# sand paper be successively polishing to a thickness of
5.9nm-6.0nm
Preferably, the step 3 specifically includes:
6061 aluminium alloys after rolling are put into nitrogen oven, are protected after nitrogen oven is warming up to 525-530 DEG C
It is 2-4 hours warm, it takes out rapidly, is put into 20-25 DEG C of quenching-in water, keeps the temperature 5 hours at 180 DEG C, it is air-cooled, it obtains raw in nanometer
The aluminum alloy plate materials of TiC particle enhancing.
Preferably, in the nano TiC ceramic particle intermediate alloy, the average-size of ceramic particle is 80nm.
It is of the present invention to roll 6061 aluminum alloy plate materials the utility model has the advantages that being enhanced using interior raw nano-TiC particle and do not add
Interior raw nano-TiC particle rolls 6061 aluminum alloy plate materials and compares, and the crystal grain ruler of 6061 aluminum alloy plate materials of nano-TiC particle is added
Very little 6061 aluminum alloy plate materials than non-plus nano TiC ceramic particle obviously refine, and room temperature tensile intensity and room-temperature yield strength are equal
It is improved and provides important technical support for production high-performance aluminum alloy sheet.
Detailed description of the invention
Fig. 1 is the EBSD tissue of 6061 aluminum alloy plate materials of non-plus nano TiC ceramic particle intermediate alloy.
Fig. 2 is the EBSD tissue for adding 6061 aluminum alloy plate materials of 0.1wt.% nano TiC ceramic particle intermediate alloy.
Fig. 3 is the EBSD tissue for adding 6061 aluminum alloy plate materials of 0.5wt.% nano TiC ceramic particle intermediate alloy.
Fig. 4 is the EBSD tissue for adding 6061 aluminum alloy plate materials of 1.0wt.% nano TiC ceramic particle intermediate alloy.
Fig. 5 is 6061 aluminum alloy plate materials containing nano TiC ceramic particle intermediate alloy in comparative example 1 and embodiment 1-3
Room temperature tensile properties.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
As shown in Figs. 1-5, the present invention provides the preparation method of a kind of nanometer of endogenous TiC particle reinforced aluminum alloy plate, tool
Body includes the following steps:
Step 1, preparation 6061 aluminum alloy melts of melting, and cast after nano TiC ceramic particle intermediate alloy is added；
Step 2 rolls 6061 aluminium alloys containing nano TiC ceramic particle intermediate alloy of casting；
Step 3 is heat-treated 6061 aluminium alloys by rolling, obtains nanometer aluminium of endogenous TiC particle enhancing and closes
Golden plate material.
Wherein, the weight percent of the component of 6061 aluminium alloys is melted are as follows: Mg:0.87%；Si:0.55%；Fe:0.59%；
Cu:0.36%；Mn:0.15%；Cr:0.17%；Zn:0.23%；Ti:0.16%；Surplus is Al；
The additional amount of nano TiC ceramic particle intermediate alloy is the 0.1-1.0wt.% of 6061 aluminum alloy melts of the melting.
Embodiment 1
The specific of the aluminum alloy plate materials that raw nano-TiC particle is strengthened in 0.1wt.% is added the preparation method is as follows:
Step 1, nano-TiC particle enhance the preparation of 6061 aluminium alloys:
(1) crucible is placed in aluminium alloy resistance smelting furnace, after being warming up to 830 DEG C, according to weight percent, in crucible
In sequentially add Mg:0.87%；Si:0.55%；Fe:0.59%；Cu:0.36%；Mn:0.15%；Cr:0.17%；Zn:
0.23%；Ti:0.16%；Surplus is Al；When aluminium alloy temperature reaches 830 DEG C, by ultrasonic probe drop under liquid level into
Row the pre-heat treatment preheats duration 5min, withdraws from ultrasonic probe, and the nanometer that mass percent is 30% is added in 6061 aluminium alloys
TiC ceramic particle intermediate alloy, after ceramic particle intermediate alloy is completely melt, mechanical stirring 2min；
Wherein, the additional amount of nano TiC ceramic particle intermediate alloy is the 0.1wt.% of 6061 aluminium alloys, in nano TiC
In ceramic particle intermediate alloy, the average-size of ceramic particle is 80nm.
(2) ultrasonic probe is preheated into 2min again deeply to 15mm under liquid level；Set ultrasonic power output as
1600W, sonication treatment time 5min.
(3) deslagging agent is added to carry out except Slag treatment, and is cast to inner cavity immediately having a size of 200mm × 150mm × 22mm
In metal type dies, 6061 aluminium alloys that nano-TiC particle intermediate alloy is added are obtained；
Wherein, the additive amount of deslagging agent is the 0.05wt.% of aluminium alloy.
Step 2: nano-TiC particle enhances the preparation of 6061 rolled aluminium alloys, it is specific as follows:
(1) casting cast is cut into the sample to be rolled of long 50mm wide 22mm high 6.2mm, sample is put into nitrogen
570 DEG C are heated to 250 DEG C per hour of heating speed in baking oven, 7 hours is kept the temperature, then cools to room temperature with the furnace.
(2) sample after homogenization heat treatment 6.0mm thickness is successively polishing to 600# and 2000# sand paper to roll
System, rolls five passages altogether, wherein the preceding each volume under pressure of four-pass is 1mm, last a time volume under pressure is 0.2mm, total volume under pressure
It is 70%.
Step 3, nano-TiC particle enhances the heat treatment of 6061 rolled aluminium alloys, specific as follows:
(1) 2 hours are kept the temperature after nitrogen oven being warming up to 530 DEG C, the sample after rolling process is then put into nitrogen and is dried
After keeping the temperature 1 hour in case, takes out be put into the quenching-in water that temperature is 25 DEG C rapidly.
(2) quenched sample is put into the small-sized atmosphere furnace heated in advance, set temperature is 180 DEG C, and heat preservation 5 is small
When, it is air-cooled, obtain nanometer 6061 aluminum alloy plate materials of endogenous TiC particle enhancing.
As shown in table, Fig. 2 and Fig. 5, in the present embodiment, the additional amount of nano TiC ceramic particle intermediate alloy is melting
The 0.1wt.% of aluminium alloy, the crystallite dimension for obtaining 6061 aluminum alloy plate materials containing nano TiC ceramic particle intermediate alloy are
22 microns, 6061 aluminum alloy plate materials than non-plus nano TiC ceramic particle have refined 46%, and room temperature tensile intensity improves
7.8%；Yield strength improves 5.5%.
Embodiment 2
The specific of the aluminum alloy plate materials that raw nano-TiC particle is strengthened in 0.5wt.% is added the preparation method is as follows:
Step 1, nano-TiC particle enhance the preparation of 6061 aluminium alloys:
(1) crucible is placed in aluminium alloy resistance smelting furnace, after being warming up to 830 DEG C, according to weight percent, in crucible
In sequentially add Mg:0.87%；Si:0.55%；Fe:0.59%；Cu:0.36%；Mn:0.15%；Cr:0.17%；Zn:
0.23%；Ti:0.16%；Surplus is Al；When aluminium alloy temperature reaches 830 DEG C, by ultrasonic probe drop under liquid level into
Row the pre-heat treatment preheats duration 5min, withdraws from ultrasonic probe, and the nanometer that mass percent is 30% is added in 6061 aluminium alloys
TiC ceramic particle intermediate alloy, after ceramic particle intermediate alloy is completely melt, mechanical stirring 2min；
Wherein, the additional amount of nano TiC ceramic particle intermediate alloy is the 0.1wt.% of 6061 aluminium alloys, in nano TiC
In ceramic particle intermediate alloy, the average-size of ceramic particle is 80nm.
(2) ultrasonic probe is preheated into 2min again deeply to 15mm under liquid level；Set ultrasonic power output as
1600W, sonication treatment time 5min.
(3) deslagging agent is added to carry out except Slag treatment, and is cast to inner cavity immediately having a size of 200mm × 150mm × 22mm
In metal type dies, 6061 aluminium alloys that nano-TiC particle intermediate alloy is added are obtained；
Wherein, the additive amount of deslagging agent is the 0.75wt.% of aluminium alloy.
Step 2: nano-TiC particle enhances the preparation of 6061 rolled aluminium alloys, it is specific as follows:
(1) casting cast is cut into the sample to be rolled of long 50mm wide 22mm high 6.2mm, sample is put into nitrogen
570 DEG C are heated to 250 DEG C per hour of heating speed in baking oven, 7 hours is kept the temperature, then cools to room temperature with the furnace.
(2) sample after homogenization heat treatment 6.0mm thickness is successively polishing to 600# and 2000# sand paper to roll
System, rolls five passages altogether, wherein the preceding each volume under pressure of four-pass is 1mm, last a time volume under pressure is 0.2mm, total volume under pressure
It is 70%.
Step 3, nano-TiC particle enhances the heat treatment of 6061 rolled aluminium alloys, specific as follows:
(1) 3 hours are kept the temperature after nitrogen oven being warming up to 528 DEG C, the sample after rolling process is then put into nitrogen and is dried
After keeping the temperature 1 hour in case, takes out be put into the quenching-in water that temperature is 25 DEG C rapidly.
(2) quenched sample is put into the small-sized atmosphere furnace heated in advance, set temperature is 180 DEG C, and heat preservation 5 is small
When, it is air-cooled, obtain nanometer 6061 aluminum alloy plate materials of endogenous TiC particle enhancing.
As shown in table 1, Fig. 3 and Fig. 5.In the present embodiment, the additional amount of nano TiC ceramic particle intermediate alloy is melting
The 0.5wt.% of aluminium alloy, the crystallite dimension for obtaining 6061 aluminum alloy plate materials containing nano TiC ceramic particle intermediate alloy are
17 microns, 6061 aluminum alloy plate materials than non-plus nano TiC ceramic particle have refined 58%, and room temperature tensile intensity improves
10.3%；Yield strength improves 10.5%,
Embodiment 3
The specific of the aluminum alloy plate materials that raw nano-TiC particle is strengthened in 1.0wt.% is added the preparation method is as follows:
Step 1, nano-TiC particle enhance the preparation of 6061 aluminium alloys:
(1) crucible is placed in aluminium alloy resistance smelting furnace, after being warming up to 830 DEG C, according to weight percent, in crucible
In sequentially add Mg:0.87%；Si:0.55%；Fe:0.59%；Cu:0.36%；Mn:0.15%；Cr:0.17%；Zn:
0.23%；Ti:0.16%；Surplus is Al；When aluminium alloy temperature reaches 830 DEG C, by ultrasonic probe drop under liquid level into
Row the pre-heat treatment preheats duration 5min, withdraws from ultrasonic probe, and the nanometer that mass percent is 30% is added in 6061 aluminium alloys
TiC ceramic particle intermediate alloy, after ceramic particle intermediate alloy is completely melt, mechanical stirring 2min；
Wherein, the additional amount of nano TiC ceramic particle intermediate alloy is the 0.1wt.% of 6061 aluminium alloys, in nano TiC
In ceramic particle intermediate alloy, the average-size of ceramic particle is 80nm.
(2) ultrasonic probe is preheated into 2min again deeply to 15mm under liquid level；Set ultrasonic power output as
1600W, sonication treatment time 5min.
(3) deslagging agent is added to carry out except Slag treatment, and is cast to inner cavity immediately having a size of 200mm × 150mm × 22mm
In metal type dies, 6061 aluminium alloys that nano-TiC particle intermediate alloy is added are obtained；
Wherein, the additive amount of deslagging agent is the 0.1wt.% of aluminium alloy.
Step 2: nano-TiC particle enhances the preparation of 6061 rolled aluminium alloys, it is specific as follows:
(1) casting cast is cut into the sample to be rolled of long 50mm wide 22mm high 6.2mm, sample is put into nitrogen
570 DEG C are heated to 250 DEG C per hour of heating speed in baking oven, 7 hours is kept the temperature, then cools to room temperature with the furnace.
(2) sample after homogenization heat treatment 6.0mm thickness is successively polishing to 600# and 2000# sand paper to roll
System, rolls five passages altogether, wherein the preceding each volume under pressure of four-pass is 1mm, last a time volume under pressure is 0.2mm, total volume under pressure
It is 70%.
Step 3, nano-TiC particle enhances the heat treatment of 6061 rolled aluminium alloys, specific as follows:
(1) 4 hours are kept the temperature after nitrogen oven being warming up to 525 DEG C, the sample after rolling process is then put into nitrogen and is dried
After keeping the temperature 1 hour in case, takes out be put into the quenching-in water that temperature is 25 DEG C rapidly.
(2) quenched sample is put into the small-sized atmosphere furnace heated in advance, set temperature is 180 DEG C, and heat preservation 5 is small
When, it is air-cooled, obtain nanometer 6061 aluminum alloy plate materials of endogenous TiC particle enhancing.
As shown in table 1, Fig. 4 and Fig. 5 in the present embodiment, the additional amount of nano TiC ceramic particle intermediate alloy is melting
The 1.0wt.% of aluminium alloy, the crystallite dimension for obtaining 6061 aluminum alloy plate materials containing nano TiC ceramic particle intermediate alloy are
14 microns, 6061 aluminum alloy plate materials than non-plus nano TiC ceramic particle have refined 66%, and room temperature tensile intensity improves
14.9%；Room-temperature yield strength improves 18.6%,.
Comparative example 1
It is not added with the preparation method for the aluminum alloy plate materials that interior raw nano-TiC particle is strengthened, specific as follows:
Step 1, the preparation of 6061 aluminium alloys, under specific:
(1) crucible is placed in aluminium alloy resistance smelting furnace, after being warming up to 830 DEG C, according to weight percent, in crucible
In sequentially add Mg:0.87%；Si:0.55%；Fe:0.59%；Cu:0.36%；Mn:0.15%；Cr:0.17%；Zn:
0.23%；Ti:0.16%；Surplus is Al；When aluminium alloy temperature reaches 830 DEG C, by ultrasonic probe drop under liquid level into
Row the pre-heat treatment preheats duration 5min, rises ultrasonic probe；
(2) after 5min, ultrasonic probe is preheated into 2min deeply to 15mm under liquid level again；Set ultrasonic wave output work
Rate is 1600W, sonication treatment time 5min.
(3) deslagging agent is added to carry out except Slag treatment, and is cast to inner cavity immediately having a size of 200mm × 150mm × 22mm
In metal type dies；
Wherein, the additive amount of deslagging agent is the 1wt.% of aluminium alloy.
Step 2: the preparation of 6061 rolled aluminium alloys, specific as follows:
(1) casting cast is cut into the sample to be rolled of long 50mm wide 22mm high 6.2mm, sample is put into nitrogen
570 DEG C are heated to 250 DEG C per hour of heating speed in baking oven, 7 hours is kept the temperature, then cools to room temperature with the furnace.
(2) sample after homogenization heat treatment 6.0mm thickness is successively polishing to 600# and 2000# sand paper to roll
System, rolls five passages altogether, wherein the preceding each volume under pressure of four-pass is 1mm, last a time volume under pressure is 0.2mm, total volume under pressure
It is 70%.
Step 3, the heat treatment of 6061 rolled aluminium alloys are specific as follows:
(1) 2 hours are kept the temperature after nitrogen oven being warming up to 525 DEG C, the sample after rolling process is then put into nitrogen and is dried
After keeping the temperature 1 hour in case, takes out be put into the quenching-in water that temperature is 25 DEG C rapidly.
(2) quenched sample is put into the small-sized atmosphere furnace heated in advance, set temperature is 180 DEG C, and heat preservation 5 is small
When, it is air-cooled, obtain 6061 aluminum alloy plate materials of finished product.
In this comparative example as shown in Fig. 1, table 1, it is not added with the crystal grain ruler of 6061 aluminum alloy plate materials of nano TiC ceramic particle
Very little is 41 microns, and yield strength, tensile strength, breaking strain are respectively 237MPa, 282MPa, 18.6%,.
Comparative example 2
The specific of the aluminum alloy plate materials that raw nano-TiC particle is strengthened in 0.05wt.% is added the preparation method is as follows:
Step 1, nano-TiC particle enhance the preparation of 6061 aluminium alloys:
(1) crucible is placed in aluminium alloy resistance smelting furnace, after being warming up to 835 DEG C, according to weight percent, in crucible
In sequentially add Mg:0.87%；Si:0.55%；Fe:0.59%；Cu:0.36%；Mn:0.15%；Cr:0.17%；Zn:
0.23%；Ti:0.16%；Surplus is Al；When aluminium alloy temperature reaches 835 DEG C, by ultrasonic probe drop under liquid level into
Row the pre-heat treatment preheats duration 5.5min, rises ultrasonic probe, and the nano-scale of mass percent 30% is added in aluminium alloy
TiC ceramic particle intermediate alloy, after ceramic particle intermediate alloy is completely melt, mechanical stirring 2.5min；
Wherein, the additional amount of nano TiC ceramic particle intermediate alloy is the 0.05wt.% of 6061 aluminium alloys, in nano TiC
In ceramic particle intermediate alloy, the average-size of ceramic particle is 80nm.
(2) ultrasonic probe is preheated into 2.5min again deeply to 16mm under liquid level；Set ultrasonic power output as
1630W, sonication treatment time 5.5min.
(3) deslagging agent is added to carry out except Slag treatment, and is cast to inner cavity immediately having a size of 200mm × 150mm × 22mm
In metal type dies, 6061 aluminium alloys that nano-TiC particle intermediate alloy is added are obtained；
Wherein, the additive amount of deslagging agent is the 0.1wt.% of aluminium alloy.
Step 2: nano-TiC particle enhances the preparation of 6061 rolled aluminium alloys, it is specific as follows:
(1) casting cast is cut into the sample to be rolled of long 50mm wide 22mm high 6.2mm, sample is put into nitrogen
570 DEG C are heated to 260 DEG C per hour of heating speed in baking oven, 7.5 hours is kept the temperature, then cools to room temperature with the furnace.
(2) sample after homogenization heat treatment 6.0mm thickness is successively polishing to 600# and 2000# sand paper to roll
System, rolls five passages altogether, wherein the preceding each volume under pressure of four-pass is 1mm, last a time volume under pressure is 0.2mm, total volume under pressure
It is 70%.
Step 3, nano-TiC particle enhances the heat treatment of 6061 rolled aluminium alloys, specific as follows:
(1) 2 hours are kept the temperature after nitrogen oven being warming up to 528 DEG C, the sample after rolling process is then put into nitrogen and is dried
After keeping the temperature 1 hour in case, takes out be put into the quenching-in water that temperature is 25 DEG C rapidly.
(2) quenched sample is put into the small-sized atmosphere furnace heated in advance, set temperature is 180 DEG C, and heat preservation 5 is small
When, it is air-cooled, obtain nanometer 6061 aluminum alloy plate materials of endogenous TiC particle enhancing.
In this comparative example, as shown in table 1, the additional amount of nano TiC ceramic particle intermediate alloy is molten alloy liquid
0.05wt.%, the crystallite dimension for obtaining 6061 aluminum alloy plate materials containing nano TiC ceramic particle intermediate alloy is 33 microns,
6061 aluminum alloy plate materials than non-plus nano TiC ceramic particle intermediate alloy have refined 20%, and yield strength, is broken at tensile strength
Splitting strain is respectively 241MPa, 289MPa, 18.7%, compared to yield strength 237MPa, the tension for not strengthening 6061 aluminium alloys
Intensity 282MPa, breaking strain 18.6%, have been respectively increased 1.69%, 2.48%, 0.54%.Obviously, add 0.05wt.%'s
Nano TiC ceramic particle intermediate alloy, without significantly strengthening the mechanical property of Al-Zn-Mg-Cu aluminium alloy.
Comparative example 3
The specific of the aluminum alloy plate materials that raw nano-TiC particle is strengthened in 1.20wt.% is added the preparation method is as follows:
Step 1, nano-TiC particle enhance the preparation of 6061 aluminium alloys:
(1) crucible is placed in aluminium alloy resistance smelting furnace, after being warming up to 840 DEG C, according to weight percent, in crucible
In sequentially add Mg:0.87%；Si:0.55%；Fe:0.59%；Cu:0.36%；Mn:0.15%；Cr:0.17%；Zn:
0.23%；Ti:0.16%；Surplus is Al；When aluminium alloy temperature reaches 840 DEG C, by ultrasonic probe drop under liquid level into
Row the pre-heat treatment preheats duration 7min, rises ultrasonic probe, and the nano-scale of mass percent 30% is added in aluminium alloy
TiC ceramic particle intermediate alloy, after ceramic particle intermediate alloy is completely melt, mechanical stirring 2min；
Wherein, the additional amount of nano TiC ceramic particle intermediate alloy is the 1.20wt.% of 6061 aluminium alloys, in nano TiC
In ceramic particle intermediate alloy, the average-size of ceramic particle is 80nm.
(2) ultrasonic probe is preheated into 2.5min again deeply to 17mm under liquid level；Set ultrasonic power output as
1650W, sonication treatment time 6min.
(3) deslagging agent is added to carry out except Slag treatment, and is cast to inner cavity immediately having a size of 200mm × 150mm × 22mm
In metal type dies, 6061 aluminium alloys that nano-TiC particle intermediate alloy is added are obtained；
Wherein, the additive amount of deslagging agent is the 0.1wt.% of aluminium alloy.
Step 2: nano-TiC particle enhances the preparation of 6061 rolled aluminium alloys, it is specific as follows:
(1) casting cast is cut into the sample to be rolled of long 50mm wide 22mm high 6.2mm, sample is put into nitrogen
570 DEG C are heated to 250 DEG C per hour of heating speed in baking oven, 7 hours is kept the temperature, then cools to room temperature with the furnace.
(2) sample after homogenization heat treatment 6.0mm thickness is successively polishing to 600# and 2000# sand paper to roll
System, rolls five passages altogether, wherein the preceding each volume under pressure of four-pass is 1mm, last a time volume under pressure is 0.2mm, total volume under pressure
It is 70%.
Step 3, nano-TiC particle enhances the heat treatment of 6061 rolled aluminium alloys, specific as follows:
(1) 2 hours are kept the temperature after nitrogen oven being warming up to 529 DEG C, the sample after rolling process is then put into nitrogen and is dried
After keeping the temperature 1 hour in case, takes out be put into the quenching-in water that temperature is 25 DEG C rapidly.
(2) quenched sample is put into the small-sized atmosphere furnace heated in advance, set temperature is 180 DEG C, and heat preservation 5 is small
When, it is air-cooled, obtain nanometer 6061 aluminum alloy plate materials of endogenous TiC particle enhancing.
In this comparative example, as shown in table 1, the additional amount of nano TiC ceramic particle intermediate alloy is molten alloy liquid
1.20wt.%, the crystallite dimension for obtaining 6061 aluminum alloy plate materials containing nano TiC ceramic particle intermediate alloy is 29 microns,
6061 aluminum alloy plate materials than non-plus nano TiC ceramic particle have refined 29%, yield strength, tensile strength, breaking strain
Respectively 247MPa, 294MPa, 16.5%, compared to yield strength 237MPa, the tensile strength for not strengthening 6061 aluminium alloys
282MPa, breaking strain 18.6%, have been respectively increased 4.22%, 4.26%, -11.29%.Obviously, receiving for 1.2wt.% is added
Rice TiC ceramic particle, without significantly strengthening the mechanical property of Al-Zn-Mg-Cu aluminium alloy, intensity is slightly improved, and plasticity is instead
It is decreased obviously.
The room-temperature mechanical property of raw nano TiC ceramic particle enhancing 6061 aluminum alloy plate materials of rolling in table 1
To sum up, tissue tune of the pottery aluminium composite material as alusil alloy for mixing the ceramic particle of scale by containing multiphase
Agent is controlled, and adjusting is made to its mass content, effectively the crystallite dimension of alusil alloy can be refined, and it is tough to improve its
Property.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (10)
1. the preparation method of a kind of nanometer of endogenous TiC particle reinforced aluminum alloy plate characterized by comprising
Step 1, preparation 6061 aluminum alloy melts of melting, and cast after nano TiC ceramic particle intermediate alloy is added；
Step 2 rolls 6061 aluminium alloys containing nano TiC ceramic particle intermediate alloy of casting；
Step 3 is heat-treated 6061 aluminium alloys by rolling, obtains a nanometer aluminium alloy plate for endogenous TiC particle enhancing
Material.
2. the preparation method of according to claim 1 nanometer of endogenous TiC particle reinforced aluminum alloy plate, which is characterized in that
The weight percent of the component of 6061 aluminium alloys of the melting are as follows: Mg:0.87%；Si:0.55%；Fe:0.59%；Cu:
0.36%；Mn:0.15%；Cr:0.17%；Zn:0.23%；Ti:0.16%；Surplus is Al；
Wherein, the additional amount of the nano TiC ceramic particle intermediate alloy is the 0.1- of 6061 aluminum alloy melts of the melting
1.0wt.%.
3. the preparation method of according to claim 2 nanometer of endogenous TiC particle reinforced aluminum alloy plate, which is characterized in that
The mass fraction of the nano TiC ceramic particle intermediate alloy is 30%.
4. the preparation method of according to claim 3 nanometer of endogenous TiC particle reinforced aluminum alloy plate, which is characterized in that
The additional amount of the nano TiC ceramic particle intermediate alloy is 1.0%.
5. the preparation method of according to claim 4 nanometer of endogenous TiC particle reinforced aluminum alloy plate, which is characterized in that
The step 1 specifically includes:
Step a, 6061 aluminium alloys are put into smelting furnace, temperature is increased to 800-850 DEG C, 6061 aluminium alloys melted
Liquid；
Step b, it is put into after ultrasonic probe is preheated and takes out, preheating time 5-10min, to 6061 aluminum alloy melts of melting
Middle addition nano TiC ceramic particle intermediate alloy is ultrasonically treated after mechanical stirring 2-3min；
Step c, deslagging agent is added, obtain except casting after Slag treatment containing nano TiC ceramic particle intermediate alloy
6061 aluminium alloy castings；
Wherein, the additional amount of deslagging agent is 6061 aluminum alloy melt 0.05-0.1wt.% of the melting.
6. the preparation method of according to claim 5 nanometer of endogenous TiC particle reinforced aluminum alloy plate, which is characterized in that
The step 2 specifically includes:
After casting cutting, it is put into nitrogen oven and carries out homogenization heat treatment, rolled, roll five passages altogether, obtain
Aluminium alloy after to rolling；
Wherein, each volume under pressure of preceding four-pass is 0.9-1mm, and the 5th passage volume under pressure is 0.1-0.2mm, and total volume under pressure is
70%.
7. the preparation method of according to claim 6 nanometer of endogenous TiC particle reinforced aluminum alloy plate, which is characterized in that
Size after casting cutting are as follows: long: 48-50mm, wide 20-22mm, high 6-6.2mm, in the homogenization heat treatment process,
Heating temperature is 565-570 DEG C, soaking time 6-8h.
8. the preparation method of according to claim 7 nanometer of endogenous TiC particle reinforced aluminum alloy plate, which is characterized in that
It is successively polishing to using 600# and 2000# sand paper with a thickness of 5.9nm-6.0nm after the casting homogenization heat treatment.
9. the preparation method of according to claim 8 nanometer of endogenous TiC particle reinforced aluminum alloy plate, which is characterized in that
The step 3 specifically includes:
6061 aluminium alloys after rolling are put into nitrogen oven, keep the temperature 2-4 after nitrogen oven is warming up to 525-530 DEG C
Hour, it takes out rapidly, is put into 20-25 DEG C of quenching-in water, keeps the temperature 5 hours at 180 DEG C, it is air-cooled, obtain a nanometer endogenous TiC
The aluminum alloy plate materials of grain enhancing.
10. special according to the preparation method of nanometer endogenous TiC particle reinforced aluminum alloy plate described in claim 3 or 4 or 9
Sign is, in the nano TiC ceramic particle intermediate alloy, the average-size of ceramic particle is 80nm.
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Application publication date: 20190315 |