CN100436615C - Aluminum-titanium-carbon-yttrium intermediate alloy and preparing method thereof - Google Patents
Aluminum-titanium-carbon-yttrium intermediate alloy and preparing method thereof Download PDFInfo
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- CN100436615C CN100436615C CNB2007100620127A CN200710062012A CN100436615C CN 100436615 C CN100436615 C CN 100436615C CN B2007100620127 A CNB2007100620127 A CN B2007100620127A CN 200710062012 A CN200710062012 A CN 200710062012A CN 100436615 C CN100436615 C CN 100436615C
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Abstract
A intermediate alloy of aluminum, titanium, carbon and Yt and method for manufacturing same relates to a grain refiner for electron alloys thinning processing and with enhanced mechanical performances, belongs to the field of metallic material design and fabricating, and is characterized by its chemical components (based on the mass percentage, wt%) as follows: Ti 0.50-6.00, C 1.00-10.00, Y 0.10-3.00, and the allowance is Al, wherein the as-cast structure is characterized by a four-phase complex tissue of alpha-Al, Al3Y, TiC and Al4C3, with the chemical compounds granules of Al3Y, TiC and Al4C3 distributed homogeneously on the alpha-Al basal body.Said intermediate alloy of aluminum, titanium, carbon and Yt is very suitable for grain refiner of electron alloys and possesses very wide market application foreground due to its simple preparing process, low cost of manufacture and capability of mass industrial production.
Description
One, technical field
What aluminium of the present invention, titanium, carbon, yttrium master alloy and manufacture method thereof related to is a kind of grain-refining agent as magnalium thinning processing and raising mechanical property, belongs to the design and the manufacturing field of metallic substance.
Two, background technology
Magnesium alloy is the lightest structural metallic materials in the present practical application, and it is little to have density, specific tenacity and specific rigidity height, advantage such as damping, shock-absorbing, anti-acoustic capability are superior.Therefore, increasing magnesium-alloy material is applied to fields such as automobile, communication electronics and aerospace.But magnesium alloy is the close-packed hexagonal crystalline structure, and the supporting capacity of alloy is relatively poor, and crystallization range is wide, easily produces casting flaws such as shrinkage porosite, hot tearing, therefore, improves its mechanical property and castability seems particularly important by grain refinement technology.
At present, magnesium alloy cast grain refinement technology developed and research mainly contains melt overheat method, flux facture, alloying element additive process and melt paddling process.Have with the main preparation methods of Al-Ti-C master alloy: under the violent stirring condition, react in (1) C adding Al-Ti binary alloy liquid as grain-refining agent; (2) C joins in the Al-Ti binary alloy liquid and reacts under vacuum condition; (3) C powder and K
2TiF
6Add the reaction of Al liquid simultaneously.Therefore these processing methodes need devices such as stirring, vacuum, gas control, and long reaction time is difficult to accurately control component content, and application cost height, difficulty are big in actual production.Owing to the nonwetting C of molten aluminium, make the adding and the alloying difficulty of C element during the Al-Ti-C fining agent is produced simultaneously, so that fail to realize the suitability for industrialized production of Al-Ti-C master alloy for a long time.
Three, summary of the invention
The problem that the purpose of aluminium of the present invention, titanium, carbon, yttrium master alloy and manufacture method thereof is to solve above-mentioned existence is avoided and is overcome its deficiency, utilize the rare earth yttrium to improve C wettability and activation in Al-Ti-C, thin brilliant effect, strengthen the C element simultaneously to the molten aluminium scattering and permeating, improve its alloying power, and apply it in the magnalium by TiC, Al
4C
3As the non-spontaneous nucleation core of α-Mg, thereby play the effect of refinement magnalium.
A kind of aluminium of the present invention, titanium, carbon, yttrium master alloy it is characterized in that chemical ingredients by mass percentage Wt% count: Ti 0.50-6.00, C 1.00-10.00, Y 0.10-3.00, all the other are Al, Characteristics of As-cast Structure is α-Al, Al
3Y, TiC and Al
4C
3Four phase complex tissues, its compound particle Al
3Y, TiC and Al
4C
3Be uniformly distributed on α-Al matrix.
The method for preparing above-mentioned a kind of aluminium, titanium, carbon, yttrium master alloy is characterized in that concrete processing step is:
I. with Graphite Powder 99, titanium valve and yttrium powder by mass percentage Wt% count: Ti 0.50-6.00, C1.00-10.00, the ratio requirement of Y0.10-3.00 weighs up raw material and mixes that to be pressed into prefabricated section standby;
II. with the preheating of fine aluminium ingot, put into then in the plumbago crucible that is heated to 400～500 ℃, temperature is transferred to 750～780 ℃ again;
When the fine aluminium ingot that III. is housed to all melts, be warming up to 820～850 ℃, then add standby prefabricated section in batches and adopt the sodium aluminum fluoride insulating covering agent to cover, be incubated and skim after 20～30 minutes, add refining agent C then
2Cl
6Carry out refining, the refining agent consumption is 1.0～1.5% of an alloy gross weight, refining is evenly stirred simultaneously, leave standstill insulation again and obtained clean aluminium, titanium, carbon, yttrium master alloy molten metal in 30～40 minutes, then it is poured in the plain metal casting mold of preheating solidification and crystallization moulding or casting and be extruded into silk.
The advantage and the purposes of grain-refining agent aluminium of the present invention, titanium, carbon, yttrium master alloy and manufacture method thereof are: in melting aluminium, titanium, carbon, yttrium master alloy process; add the prefabricated section that contains a certain amount of rare earth element yttrium for preparing in advance; handle insulation through homogenizing; pour into ingot mould or casting mold after refining is skimmed, make it in the as cast condition process of setting, to have formed α-Al, Al
3Y, TiC and Al
4C
3Four phase complex tissues, and compound particle is uniformly distributed on α-Al matrix.Simultaneously, utilize rare earth element yttrium, make its graphite granule surface adsorption poly-partially, effectively promote the wettability between aluminium liquid and the graphite, form TiC, the Al of sufficient amount as surfactant
4C
3Particle also prevents the agglomerating effect of TiC particle gathering each other effectively; Al in aluminium, titanium, carbon, the yttrium master alloy
4C
3, the TiC compound is less with the lattice mismatch of α-Mg, thereby the heterogeneous body nucleus of the α-Mg when becoming magnesium alloy solidification, this grain refining to magnesium alloy plays great function, also can make the thick Mg that distributes along crystal boundary in the magnalium simultaneously
17Al
12Being particulate state mutually distributes.This aluminium, titanium, carbon, yttrium master alloy are well suited for the grain-refining agent as magnalium, and preparation technology is simple, and low production cost can carry out large-scale industrial production, has boundless market application foreground.
Four, embodiment
Embodiment 1:
At first I. with Graphite Powder 99, titanium valve and yttrium powder by mass percentage Wt% count: Ti 0.50, C1.00, the ratio requirement of Y 0.10 weighs up raw material and mixes that to be pressed into prefabricated section standby;
II. with the preheating of fine aluminium ingot,, put into then in the plumbago crucible that is heated to 450 ℃, temperature is transferred to 760 ℃ again;
When the fine aluminium ingot that III. is housed to all melts, be warming up to 830 ℃, then add standby prefabricated section in batches and adopt the sodium aluminum fluoride insulating covering agent to cover, be incubated and skim after 25 minutes, add refining agent C then
2Cl
6Carry out refining, the refining agent consumption is 1.3% of an alloy gross weight, refining is evenly stirred simultaneously, leaves standstill insulation again and obtains clean aluminium, titanium, carbon, yttrium master alloy molten metal in 40 minutes, then it is poured into solidification and crystallization moulding in the plain metal casting mold of preheating; Then aluminium, titanium, carbon, the yttrium master alloy that makes joined Wt%:Al5.0 by mass percentage, Mn0.4, Zn 0.2, and Be 0.0015, and all the other are Mg, get final product in the AM50 magnesium alloy that makes.Its service check the results are shown in following table:
Correlated performance (T6 attitude) before and after the AM50 magnesium alloy refining
Embodiment 2:
At first I. with Graphite Powder 99, titanium valve and yttrium powder by mass percentage Wt% count: Ti 6.00, C10.00, the ratio requirement of Y3.00 weighs up raw material and mixes that to be pressed into prefabricated section standby;
II. with the preheating of fine aluminium ingot,, put into then in the plumbago crucible that is heated to 450 ℃, temperature is transferred to 760 ℃ again;
When the fine aluminium ingot that III. is housed to all melts, be warming up to 830 ℃, then add standby prefabricated section in batches and adopt the sodium aluminum fluoride insulating covering agent to cover, be incubated and skim after 25 minutes, add refining agent C then
2Cl
6Carry out refining, the refining agent consumption is 1.3% of an alloy gross weight, refining is evenly stirred simultaneously, leaves standstill insulation again and obtains clean aluminium, titanium, carbon, yttrium master alloy molten metal in 40 minutes, then it is poured into solidification and crystallization moulding in the plain metal casting mold of preheating; Then aluminium, titanium, carbon, the yttrium master alloy that makes joined Wt%:Al5.0 by mass percentage, Mn0.4, Zn 0.2, and Be 0.0015, and all the other are Mg, get final product in the AM50 magnesium alloy that makes.Its service check the results are shown in following table:
Correlated performance (T6 attitude) before and after the AM50 magnesium alloy refining
Embodiment 3:
At first I. with Graphite Powder 99, titanium valve and yttrium powder by mass percentage Wt% count: Ti 3.00, C5.00, the ratio requirement of Y 2.00 weighs up raw material and mixes that to be pressed into prefabricated section standby;
II. with the preheating of fine aluminium ingot,, put into then in the plumbago crucible that is heated to 450 ℃, temperature is transferred to 760 ℃ again;
When the fine aluminium ingot that III. is housed to all melts, be warming up to 830 ℃, then add standby prefabricated section in batches and adopt the sodium aluminum fluoride insulating covering agent to cover, be incubated and skim after 25 minutes, add refining agent C then
2Cl
6Carry out refining, the refining agent consumption is 1.3% of an alloy gross weight, refining is evenly stirred simultaneously, leaves standstill insulation again and obtains clean aluminium, titanium, carbon, yttrium master alloy molten metal in 40 minutes, then it is poured into solidification and crystallization moulding in the plain metal casting mold of preheating; Then aluminium, titanium, carbon, the yttrium master alloy that makes joined Wt%:Al5.0 by mass percentage, Mn0.4, Zn 0.2, and Be 0.0015, and all the other are Mg, get final product in the AM50 magnesium alloy that makes.Its service check the results are shown in following table:
Correlated performance (T6 attitude) before and after the AM50 magnesium alloy refining
Embodiment 4:
At first I. with Graphite Powder 99, titanium valve and yttrium powder by mass percentage Wt% count: Ti 0.50, C1.00, the ratio requirement of Y 0.10 weighs up raw material and mixes that to be pressed into prefabricated section standby;
II. with the preheating of fine aluminium ingot,, put into then in the plumbago crucible that is heated to 450 ℃, temperature is transferred to 760 ℃ again;
When the fine aluminium ingot that III. is housed to all melts, be warming up to 830 ℃, then add standby prefabricated section in batches and adopt the sodium aluminum fluoride insulating covering agent to cover, be incubated and skim after 25 minutes, add refining agent C then
2Cl
6Carry out refining, the refining agent consumption is 1.3% of an alloy gross weight, refining is evenly stirred simultaneously, leaves standstill insulation again and obtains clean aluminium, titanium, carbon, yttrium master alloy molten metal in 40 minutes, then it is poured into solidification and crystallization moulding in the plain metal casting mold of preheating; Then aluminium, titanium, carbon, the yttrium master alloy that makes joined Wt%::Al8.5 by mass percentage, Zn 0.7, Mn0.3, and Be 0.0015, and all the other are Mg, get final product in the AZ91 magnesium alloy that makes.Its service check the results are shown in following table:
Correlated performance (T6 attitude) before and after the AZ91 magnesium alloy refining
Embodiment 5:
At first I. with Graphite Powder 99, titanium valve and yttrium powder by mass percentage Wt% count: Ti 6.00, C10.00, the ratio requirement of Y3.00 weighs up raw material and mixes that to be pressed into prefabricated section standby;
II. with the preheating of fine aluminium ingot,, put into then in the plumbago crucible that is heated to 450 ℃, temperature is transferred to 760 ℃ again;
When the fine aluminium ingot that III. is housed to all melts, be warming up to 830 ℃, then add standby prefabricated section in batches and adopt the sodium aluminum fluoride insulating covering agent to cover, be incubated and skim after 25 minutes, add refining agent C then
2Cl
6Carry out refining, the refining agent consumption is 1.3% of an alloy gross weight, refining is evenly stirred simultaneously, leaves standstill insulation again and obtains clean aluminium, titanium, carbon, yttrium master alloy molten metal in 40 minutes, then it is poured into solidification and crystallization moulding in the plain metal casting mold of preheating; Then aluminium, titanium, carbon, the yttrium master alloy that makes joined Wt%::Al8.5 by mass percentage, Zn 0.7, Mn0.3, and Be 0.0015, and all the other are Mg, get final product in the AZ91 magnesium alloy that makes.Its service check the results are shown in following table:
Correlated performance (T6 attitude) before and after the AZ91 magnesium alloy refining
Embodiment 6:
At first I. with Graphite Powder 99, titanium valve and yttrium powder by mass percentage Wt% count: Ti 3.00, C5.00, the ratio requirement of Y 2.00 weighs up raw material and mixes that to be pressed into prefabricated section standby;
II. with the preheating of fine aluminium ingot,, put into then in the plumbago crucible that is heated to 450 ℃, temperature is transferred to 760 ℃ again;
When the fine aluminium ingot that III. is housed to all melts, be warming up to 830 ℃, then add standby prefabricated section in batches and adopt the sodium aluminum fluoride insulating covering agent to cover, be incubated and skim after 25 minutes, add refining agent C then
2Cl
6Carry out refining, the refining agent consumption is 1.3% of an alloy gross weight, refining is evenly stirred simultaneously, leaves standstill insulation again and obtains clean aluminium, titanium, carbon, yttrium master alloy molten metal in 40 minutes, then it is poured into solidification and crystallization moulding in the plain metal casting mold of preheating; Then aluminium, titanium, carbon, the yttrium master alloy that makes joined Wt%::Al8.5 by mass percentage, Zn 0.7, Mn0.3, and Be 0.0015, and all the other are Mg, get final product in the AZ91 magnesium alloy that makes.Its service check the results are shown in following table:
Correlated performance (T6 attitude) before and after the AZ91 magnesium alloy refining
Claims (2)
1. an aluminium, titanium, carbon, yttrium master alloy, it is characterized in that chemical ingredients by mass percentage Wt% count: Ti 0.50-6.00, C 1.00-10.00, Y 0.10-3.00, all the other are Al, Characteristics of As-cast Structure is α-Al, Al
3Y, TiC and Al
4C
3Four phase complex tissues, its compound particle Al
3Y, TiC and Al
4C
3Be uniformly distributed on α-Al matrix.
2. the method for preparing the described a kind of aluminium of claim 1, titanium, carbon, yttrium master alloy is characterized in that concrete processing step is:
I. with Graphite Powder 99, titanium valve and yttrium powder by mass percentage Wt% count: Ti 0.50-6.00, C1.00-10.00, the ratio requirement of Y 0.10-3.00 weighs up raw material and mixes that to be pressed into prefabricated section standby;
II. with the preheating of fine aluminium ingot, put into then in the plumbago crucible that is heated to 400～500 ℃, temperature is transferred to 750～780 ℃ again;
When the fine aluminium ingot that III. is housed to all melts, be warming up to 820～850 ℃, then add standby prefabricated section in batches and adopt the sodium aluminum fluoride insulating covering agent to cover, be incubated and skim after 20～30 minutes, add refining agent C then
2Cl
6Carry out refining, the refining agent consumption is 1.0～1.5% of an alloy gross weight, refining is evenly stirred simultaneously, leave standstill insulation again and obtained clean aluminium, titanium, carbon, yttrium master alloy molten metal in 30～40 minutes, then it is poured in the plain metal casting mold of preheating solidification and crystallization moulding or casting and be extruded into silk.
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|---|---|---|---|
| CNB2007100620127A CN100436615C (en) | 2007-05-26 | 2007-05-26 | Aluminum-titanium-carbon-yttrium intermediate alloy and preparing method thereof |
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| CNB2007100620127A CN100436615C (en) | 2007-05-26 | 2007-05-26 | Aluminum-titanium-carbon-yttrium intermediate alloy and preparing method thereof |
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| CN100436615C true CN100436615C (en) | 2008-11-26 |
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| CN102212725B (en) * | 2011-06-10 | 2012-10-10 | 深圳市新星轻合金材料股份有限公司 | Application of aluminium-zirconium-titanium-carbon intermediate alloy in magnesium and magnesium alloy deformation processing |
| CN102206777B (en) * | 2011-06-10 | 2013-07-10 | 深圳市新星轻合金材料股份有限公司 | Method for preparing aluminum-zirconium-titanium-carbon intermediate alloy |
| CN102784905B (en) * | 2012-06-08 | 2014-04-16 | 北京工业大学 | Al-Ti-C-Er refiner and preparation method |
| CN103290288B (en) * | 2013-06-26 | 2015-10-07 | 重庆大学 | A kind of low cost high-ductility wrought magnesium alloy and preparation method thereof |
| CN104404279A (en) * | 2014-11-29 | 2015-03-11 | 江西洪都航空工业集团有限责任公司 | Aluminum-magnesium-beryllium intermediate alloy and preparation method thereof |
| CN104726737B (en) * | 2015-04-02 | 2017-02-01 | 东南大学 | Degradable aluminum-base material |
| CN108330308A (en) * | 2018-02-07 | 2018-07-27 | 兰州理工大学 | A kind of Al-Ti-C-La composite crystal grain fining agents, alloy and preparation method thereof |
| CN111155009A (en) * | 2020-01-16 | 2020-05-15 | 深圳市新星轻合金材料股份有限公司 | Preparation method of magnesium-aluminum-titanium-chromium alloy |
| CN111235415A (en) * | 2020-01-16 | 2020-06-05 | 深圳市新星轻合金材料股份有限公司 | Preparation method of magnesium-aluminum-titanium-vanadium alloy |
| CN112795816B (en) * | 2020-12-10 | 2022-03-01 | 北京星航机电装备有限公司 | Preparation process of AlTi10 intermediate alloy |
| CN114150173A (en) * | 2021-12-07 | 2022-03-08 | 福建省漳平市九鼎氟化工有限公司 | Al-Ti-C-Sc intermediate alloy refiner and preparation method thereof |
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