CN109082568A - A kind of fabricated in situ nanometer CuAl2/Al2O3The preparation method of reinforced aluminum matrix composites - Google Patents
A kind of fabricated in situ nanometer CuAl2/Al2O3The preparation method of reinforced aluminum matrix composites Download PDFInfo
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- CN109082568A CN109082568A CN201810997554.1A CN201810997554A CN109082568A CN 109082568 A CN109082568 A CN 109082568A CN 201810997554 A CN201810997554 A CN 201810997554A CN 109082568 A CN109082568 A CN 109082568A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/12—Alloys based on aluminium with copper as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/058—Mixtures of metal powder with non-metallic powder by reaction sintering (i.e. gasless reaction starting from a mixture of solid metal compounds)
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- 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
- C22C32/001—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 only oxides
- C22C32/0015—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 only oxides with only single oxides as main non-metallic constituents
- C22C32/0036—Matrix based on Al, Mg, Be or alloys thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to a kind of fabricated in situ nanometer CuAl2/Al2O3The preparation method of reinforced aluminum matrix composites, including the following steps: (1) prepare mixed-powder, according to cupric oxide powder: aluminium powder or Al alloy powder mass ratio are to weigh mixed-powder less than 10%.(2) ball-milling treatment is carried out to mixed-powder, mixed-powder is fitted into spheroidal graphite tank, ball-milling treatment is carried out to mixed-powder under protection of argon gas, ball milling parameter: ratio of grinding media to material 5:1~15:1, revolving speed 200r/min, Ball-milling Time 1~4 hour.(3) sinter molding.
Description
Technical field
Powder metallurgical technique fabricated in situ nanometer CuAl is utilized the present invention relates to a kind of2/Al2O3Enhance aluminum-base composite material
The method of material belongs to metal-base composites preparation technical field.
Background technique
Aluminum matrix composite due to having many advantages, such as that specific strength is high, electrical and thermal conductivity performance is good, be widely used in aerospace and
Civil field.It mostly uses ceramic particle, ceramic whisker, spinel particle etc. as reinforced phase in traditional aluminum matrix composite, draws
Enter the method for reinforced phase then mainly using outer addition.However in the design of the above composite system and technology of preparing, there are several
The shortcomings that aspect.It introduces reinforced phase by outer addition first to will lead to that reinforced phase is unevenly distributed, reinforced phase introduces opposite and contain
It measures lower, poor with matrix associativity.In addition, excessive ceramic phase is introduced into aluminum substrate, due to the thermal expansion of itself and matrix
Coefficient mismatches, and is easy to cause composite material to crack during military service.Introducing reinforced phase using in-situ method then can be effective gram
Disadvantage mentioned above is taken, the preferable aluminum matrix composite of comprehensive mechanical property is conducive to.
Make reducing agent with aluminium, metal oxide can pass through original position as oxidant, by thermit reaction in aluminum substrate
It reacts a step and obtains intermetallic compound and aluminium oxide.Intermetallic compound not only intensity with higher, while and aluminum substrate
Interface bond strength is higher, and the aluminium oxide generated can also be used as the reinforcement in aluminum matrix composite.But due to causing aluminium
The energy barrier of thermal response is higher, therefore previous researcher realizes thermit reaction through the mode frequently with casting.But it cast
Since thermit reaction is more violent thermal explosion can often occur for Cheng Zhong, lead to experimentation danger with higher, need to develop one
The new reactive mode of kind.
Summary of the invention
The purpose of the present invention is to provide one kind to prepare CuAl by fabricated in situ mode2/Al2O3Enhance aluminum-base composite material
The method of material, this method can reduce risk, and can effectively overcome reinforced phase cyrystal boundary segregation in casting, be unevenly distributed
The shortcomings that.To achieve the above object, the present invention is implemented by the following technical programs:
A kind of fabricated in situ nanometer CuAl2/Al2O3The preparation method of reinforced aluminum matrix composites, including the following steps:
(1) mixed-powder is prepared
According to cupric oxide powder: aluminium powder or Al alloy powder mass ratio are to weigh mixed-powder less than 10%.
(2) ball-milling treatment is carried out to mixed-powder
Mixed-powder is fitted into spheroidal graphite tank, ball-milling treatment, ball milling parameter: ball are carried out to mixed-powder under protection of argon gas
Material is than 5:1~15:1, revolving speed 200r/min, and Ball-milling Time 1~4 hour.
(3) sinter molding.
Reaction mechanism: although cupric oxide powder itself has very high fusing point, when it forms mixed powder opisthosoma with aluminium powder
When being, aluminium powder may act as reducing agent, and cupric oxide powder may act as oxidant.And guaranteeing two kinds of powder by way of ball milling
Higher energy is also inputted while uniformly mixed into system, it is thus possible to promote the mixed-powder system can be in aluminium fusing point
It is reacted below.Reaction equation: CuO+Al → CuAl2+Al2O3
Detailed description of the invention
Fig. 1 is original aluminium powder pattern
Fig. 2 is native oxide copper powder pattern
Fig. 3 is that ball milling mixes pattern after powder
Fig. 4 is cold pressing block DSC-TG curve
Fig. 5 is tissue topography of the composite material under scanning electron microscope and transmission electron microscope after sintering, a) is aoxidized at granular boundary
Aluminium；B) TEM crystal boundary；C) nanometer CuAl under TEM2；D) nanometer Al under TEM2O3Particle
Fig. 6 is engineering stress-strain curve of the fine aluminium of hot pressing state composite material and same process preparation.
Specific embodiment
Technology path of the invention is as follows:
(1) mixed-powder is prepared
According to cupric oxide powder: aluminium powder (or Al alloy powder) mass ratio is to weigh mixed-powder less than 10%.
(2) ball-milling treatment is carried out to mixed-powder
Mixed-powder is fitted into spheroidal graphite tank, ball-milling treatment, ball milling parameter: ball are carried out to mixed-powder under protection of argon gas
Material is than 5:1~15:1, revolving speed 200r/min, and Ball-milling Time 1~4 hour.
(3) sinter molding
Powder after ball milling, which is put into the mold of vacuum hotpressing stove, carries out Thermocompressed sintering and forming, sintering pressure 50MPa, burns
Junction temperature is 620 DEG C.The pressure sintering process such as HIP sintering, discharge plasma sintering is used equally for powder sintered molding.
The composite material of preparation can further increase material property by subsequent heat processing technique.
It further illustrates that the present invention, these examples are served only for illustrating the present invention below with reference to example, is not intended to limit the present invention.
Embodiment 1
It weighs 19.8g aluminium powder (as shown in Figure 1), 0.2g cupric oxide powder (as shown in Figure 2), 0.2g stearic acid (is used as process
Controlling agent prevents that cold welding occurs in mechanical milling process), it is placed in 250 milliliters of stainless steel jar mill, and be filled with argon gas.Using row
Planetary ball mill was with 200r/min ball milling 2 hours, ratio of grinding media to material 15:1.The mixed-powder after ball milling is taken out in vacuum glove box
(as shown in Figure 3).For Wen Di required for precise measurement hot pressed sintering, the powder after ball milling mixing is cold-pressed as block first,
DSC-TG test is carried out to the block after cold pressing.Diameter is then used to carry out vacuum heating-press sintering, sintering temperature for the mold of 45mm
620 DEG C of degree, sintering pressure 50MPa.Obtain the nanometer CuAl that diameter is 45mm thickness about 4mm2/Al2O3Enhance aluminum-base composite material
Expect sample (as shown in Figure 5).
It by linear cutter is the style that can be used for stretching by aluminum matrix composite, using universal tensile testing machine
It is stretched, rate of extension 0.5mm/min, it is as shown in Figure 6 which stretches engineering stress strain curve
Embodiment 2
19.8g aluminium powder, 0.4g cupric oxide powder are weighed, 0.2g stearic acid (is used as process control agent, prevents from sending out in mechanical milling process
Raw food weldering), it is placed in 250 milliliters of stainless steel jar mill, and be filled with argon gas.Use planetary ball mill with 200r/min ball
Mill 2 hours, ratio of grinding media to material 15:1.In vacuum glove box take out ball milling after mixed-powder, use diameter for the mold of 45mm into
Row vacuum heating-press sintering, 620 DEG C of sintering temperature, sintering pressure 50MPa.Obtain the nanometer that diameter is 45mm thickness about 4mm
CuAl2/Al2O3Reinforced aluminum matrix composites sample.
It by linear cutter is the style that can be used for stretching by aluminum matrix composite, using universal tensile testing machine
It is stretched, rate of extension 0.5mm/min, obtains the composite material and stretch engineering stress strain curve.
Embodiment 3
19.8g aluminium powder, 0.6g cupric oxide powder are weighed, 0.2g stearic acid (is used as process control agent, prevents from sending out in mechanical milling process
Raw food weldering), it is placed in 250 milliliters of stainless steel jar mill, and be filled with argon gas.Use planetary ball mill with 200r/min ball
Mill 2 hours, ratio of grinding media to material 15:1.In vacuum glove box take out ball milling after mixed-powder, use diameter for the mold of 45mm into
Row vacuum heating-press sintering, 620 DEG C of sintering temperature, sintering pressure 50MPa.Obtain the nanometer that diameter is 45mm thickness about 4mm
CuAl2/Al2O3Reinforced aluminum matrix composites sample.
It by linear cutter is the style that can be used for stretching by aluminum matrix composite, using universal tensile testing machine
It is stretched, rate of extension 0.5mm/min, obtains the composite material and stretch engineering stress strain curve.
Embodiment 4
19.8g aluminium powder, 0.8g cupric oxide powder are weighed, 0.2g stearic acid (is used as process control agent, prevents from sending out in mechanical milling process
Raw food weldering), it is placed in 250 milliliters of stainless steel jar mill, and be filled with argon gas.Use planetary ball mill with 200r/min ball
Mill 2 hours, ratio of grinding media to material 15:1.In vacuum glove box take out ball milling after mixed-powder, use diameter for the mold of 45mm into
Row vacuum heating-press sintering, 620 DEG C of sintering temperature, sintering pressure 50MPa.Obtain the nanometer that diameter is 45mm thickness about 4mm
CuAl2/Al2O3Reinforced aluminum matrix composites sample.
It by linear cutter is the style that can be used for stretching by aluminum matrix composite, using universal tensile testing machine
It is stretched, rate of extension 0.5mm/min, obtains the composite material and stretch engineering stress strain curve.
Embodiment 5
19.8g aluminium powder, 1g cupric oxide powder are weighed, 0.2g stearic acid (is used as process control agent, prevents from occurring in mechanical milling process
Cold welding), it is placed in 250 milliliters of stainless steel jar mill, and be filled with argon gas.Use planetary ball mill with 200r/min ball milling 2
Hour, ratio of grinding media to material 15:1.The mixed-powder after ball milling is taken out in vacuum glove box, uses diameter to carry out for the mold of 45mm true
Empty hot pressed sintering, 620 DEG C of sintering temperature, sintering pressure 50MPa.Obtain the nanometer CuAl that diameter is 45mm thickness about 4mm2/
Al2O3Reinforced aluminum matrix composites sample.
It by linear cutter is the style that can be used for stretching by aluminum matrix composite, using universal tensile testing machine
It is stretched, rate of extension 0.5mm/min, obtains the composite material and stretch engineering stress strain curve.
Aluminium powder and cupric oxide powder are uniformly mixed in such a way that ball milling mixes powder, pass through the side of powder metallurgy by the present invention
Method is in aluminium fusing point following implemented thermit reaction, fabricated in situ nanometer CuAl2/Al2O3Reinforced aluminum matrix composites.Powder metallurgy
Method not only reduces experimental risk, simultaneously can be used for producing in enormous quantities, has high prospects for commercial application.
Claims (1)
1. a kind of fabricated in situ nanometer CuAl2/Al2O3The preparation method of reinforced aluminum matrix composites, including the following steps:
(1) mixed-powder is prepared
According to cupric oxide powder: aluminium powder or Al alloy powder mass ratio are to weigh mixed-powder less than 10%.
(2) ball-milling treatment is carried out to mixed-powder
Mixed-powder is fitted into spheroidal graphite tank, ball-milling treatment, ball milling parameter: ratio of grinding media to material are carried out to mixed-powder under protection of argon gas
5:1~15:1, revolving speed 200r/min, Ball-milling Time 1~4 hour.
(3) sinter molding.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518033A (en) * | 2019-01-18 | 2019-03-26 | 福州大学 | A kind of situ Al2O3Particle enhanced aluminum-based composite material preparation method |
| CN110079689A (en) * | 2019-05-06 | 2019-08-02 | 西南交通大学 | A kind of in-situ Al-base composition and preparation method thereof |
| CN112626367A (en) * | 2021-01-06 | 2021-04-09 | 山东省科学院新材料研究所 | Preparation method of nano alumina particle reinforced aluminum-copper alloy composite material |
| CN116411199A (en) * | 2023-06-12 | 2023-07-11 | 内蒙古工业大学 | Al 2 O 3 Particles and Al 2 Cu jointly reinforced aluminum-based composite material and preparation method thereof |
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| CN1382816A (en) * | 2002-05-30 | 2002-12-04 | 昆明理工大学 | Process for preparing Cu-Al2O3 composition |
| CN101418396A (en) * | 2008-11-25 | 2009-04-29 | 陕西科技大学 | Method for preparing biphase cooperative strengthening TiAl base composite material |
| CN107099689A (en) * | 2017-05-11 | 2017-08-29 | 武汉轻工大学 | A kind of Al of reaction in-situ generation2O3The preparation method of particle enhanced aluminum-based composite material |
| CN108374133A (en) * | 2018-03-09 | 2018-08-07 | 天津大学 | In-situ synthesis of MgAlB4Method for whisker reinforced aluminium base composite material |
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2018
- 2018-08-29 CN CN201810997554.1A patent/CN109082568A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1382816A (en) * | 2002-05-30 | 2002-12-04 | 昆明理工大学 | Process for preparing Cu-Al2O3 composition |
| CN101418396A (en) * | 2008-11-25 | 2009-04-29 | 陕西科技大学 | Method for preparing biphase cooperative strengthening TiAl base composite material |
| CN107099689A (en) * | 2017-05-11 | 2017-08-29 | 武汉轻工大学 | A kind of Al of reaction in-situ generation2O3The preparation method of particle enhanced aluminum-based composite material |
| CN108374133A (en) * | 2018-03-09 | 2018-08-07 | 天津大学 | In-situ synthesis of MgAlB4Method for whisker reinforced aluminium base composite material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518033A (en) * | 2019-01-18 | 2019-03-26 | 福州大学 | A kind of situ Al2O3Particle enhanced aluminum-based composite material preparation method |
| CN110079689A (en) * | 2019-05-06 | 2019-08-02 | 西南交通大学 | A kind of in-situ Al-base composition and preparation method thereof |
| CN110079689B (en) * | 2019-05-06 | 2021-08-03 | 西南交通大学 | In-situ aluminum-based composite material and preparation method thereof |
| CN112626367A (en) * | 2021-01-06 | 2021-04-09 | 山东省科学院新材料研究所 | Preparation method of nano alumina particle reinforced aluminum-copper alloy composite material |
| CN112626367B (en) * | 2021-01-06 | 2022-01-11 | 山东省科学院新材料研究所 | Preparation method of nano alumina particle reinforced aluminum-copper alloy composite material |
| CN116411199A (en) * | 2023-06-12 | 2023-07-11 | 内蒙古工业大学 | Al 2 O 3 Particles and Al 2 Cu jointly reinforced aluminum-based composite material and preparation method thereof |
| CN116411199B (en) * | 2023-06-12 | 2023-08-04 | 内蒙古工业大学 | Al 2 O 3 Particles and Al 2 Cu jointly reinforced aluminum-based composite material and preparation method thereof |
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Application publication date: 20181225 |