CN106399765B - Al-Si-Mg aluminium alloy and its preparation process - Google Patents
Al-Si-Mg aluminium alloy and its preparation process Download PDFInfo
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- CN106399765B CN106399765B CN201610885981.1A CN201610885981A CN106399765B CN 106399765 B CN106399765 B CN 106399765B CN 201610885981 A CN201610885981 A CN 201610885981A CN 106399765 B CN106399765 B CN 106399765B
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- aluminium alloy
- alloy
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- aluminium
- water cooled
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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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- 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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
Abstract
The invention discloses a series of Al-Si-Mg aluminium alloys and its preparation processes.The aluminium alloy is to use non-consumable arc furnace melting Al-Si-Mg aluminium alloy ingots under vacuum conditions, sucks in water cooled copper mould aluminium alloy melt by vacuum suction casting technique and forms.The preparation of Al-Si-Mg alloy sample is that suitable Al-Si-Mg aluminium alloy ingots is put into the copper crucible of non-consumable arc furnace, and furnace chamber is then evacuated down to 1 × 10‑4Pa, being filled with high-purity argon gas makes the pressure inside furnace chamber reach 40Pa, then by Al-Si-Mg alloy melting and alloy melt is drawn into water cooled copper mould.The chemical component of the alusil alloy be 35.0wt%Si, 0.2-1.4wt%Mg, it is other be Al, compression strength 349-562MPa, yield strength 290-520MPa, plastic strain 9.5-35.6%, hardness 77.3-122.2HBW, resistivity are 0.09-0.11 μ Ω m.
Description
Technical field
The present invention relates to a series of Al-Si-Mg aluminium alloys and its preparation processes.
Background technique
Silumin is since its specific strength and hardness are high, density is small, anti-corrosion and wear-resisting property is strong, high-temperature behavior is good, line
The coefficient of expansion is small, the capacity of heat transmission is strong, at low cost, is the ideal material of engine piston, accurate wear part and electronic packing piece.
However silumin shows brittleness since primary silicon is coarse, processing performance deteriorates, and application is restricted.Magnesium elements add
Enter in silumin, on the one hand can improve pattern, size and the distribution of primary silicon and Eutectic Silicon in Al-Si Cast Alloys, silumin can be improved
Performance, on the other hand since Mg and Si form Mg2Si phase is used as reinforcement, can further improve the performance of silumin.
Furthermore the form and distribution that can further improve the phase in silumin by quickly solidifying, improve silumin
Various performances.Therefore, had great importance using rapid solidification method preparation Al-Si-Mg silumin.
Summary of the invention
The purpose of the present invention is to provide a series of Al-Si-Mg aluminium alloys and its preparation processes.
The purpose of the present invention is what is be achieved through the following technical solutions: a series of Al-Si-Mg aluminium alloys, which is characterized in that
Include the following steps: for suitable Al-Si-Mg aluminium alloy ingots to be put into the copper crucible of non-consumable arc furnace, then by furnace
Chamber is evacuated down to 1 × 10-4Pa, being filled with high-purity argon gas makes the pressure inside furnace chamber reach 40Pa, then melts Al-Si-Mg alloy
Change and be drawn into alloy melt and prepares the alloy bar that diameter is 5mm, length is 70mm in water cooled copper mould.
Product made of the present invention uses universal electrical testing machine measurement compression strength, yield strength and plastic strain respectively,
Hardness is measured with digital brinell hardness tester, with four electrode method measured resistivity.
The chemical component of Al-Si-Mg aluminium alloy of the present invention be 35.0wt%Si, 0.2-1.4wt%Mg, it is other be Al, resist
Compressive Strength is 349-562MPa, yield strength 290-520MPa, plastic strain 9.5-35.6%, hardness 77.3-
122.2HBW, resistivity are 0.09-0.11 μ Ω m.
Specific embodiment
Below according to specific embodiment, the invention will be further described:
Embodiment 1
It weighs the Al-Si-Mg aluminium alloy ingots 10g that content of magnesium is 0.2wt% in the balance, puts it into non-consumable vacuum arc
In the copper crucible of furnace, furnace chamber is then evacuated down to 1 × 10-4Pa, being filled with high-purity argon gas makes the pressure inside furnace chamber reach 40Pa,
Then be drawn into water cooled copper mould by Al-Si-Mg alloy melting and by alloy melt prepare diameter be 5mm, length 70mm
Alloy bar.Compression strength is 497MPa, yield strength 330MPa, plastic strain 35.6%, hardness 86.1HBW, resistance
Rate is 0.09 μ Ω m.
Embodiment 2
It weighs the Al-Si-Mg aluminium alloy ingots 10g that content of magnesium is 0.6wt% in the balance, puts it into non-consumable vacuum arc
In the copper crucible of furnace, furnace chamber is then evacuated down to 1 × 10-4Pa, being filled with high-purity argon gas makes the pressure inside furnace chamber reach 40Pa,
Then be drawn into water cooled copper mould by Al-Si-Mg alloy melting and by alloy melt prepare diameter be 5mm, length 70mm
Alloy bar.Compression strength is 562MPa, yield strength 480MPa, plastic strain 31.2%, hardness 92.1HBW, resistance
Rate is 0.1 μ Ω m.
Embodiment 3
It weighs the Al-Si-Mg aluminium alloy ingots 10g that content of magnesium is 1.0wt% in the balance, puts it into non-consumable vacuum arc
In the copper crucible of furnace, furnace chamber is then evacuated down to 1 × 10-4Pa, being filled with high-purity argon gas makes the pressure inside furnace chamber reach 40Pa,
Then be drawn into water cooled copper mould by Al-Si-Mg alloy melting and by alloy melt prepare diameter be 5mm, length 70mm
Alloy bar.Compression strength is 349MPa, yield strength 290MPa, plastic strain 23.0%, hardness 122.2HBW, electricity
Resistance rate is 0.1 μ Ω m.
Embodiment 4
It weighs the Al-Si-Mg aluminium alloy ingots 10g that content of magnesium is 1.4wt% in the balance, puts it into non-consumable vacuum arc
In the copper crucible of furnace, furnace chamber is then evacuated down to 1 × 10-4Pa, being filled with high-purity argon gas makes the pressure inside furnace chamber reach 40Pa,
Then be drawn into water cooled copper mould by Al-Si-Mg alloy melting and by alloy melt prepare diameter be 5mm, length 70mm
Alloy bar.Compression strength is 556MPa, yield strength 520MPa, plastic strain 9.5%, hardness 77.3HBW, resistance
Rate is 0.11 μ Ω m.
Claims (2)
1. a kind of Al-Si-Mg aluminium alloy, it is characterised in that: the chemical component of the aluminium alloy is 35.0wt%Si, 0.2-
1.4wt%Mg, it is other be Al;Include the following steps: suitable Al-Si-Mg aluminium alloy ingots being put into non-consumable arc furnace
In copper crucible, furnace chamber is then evacuated down to 1 × 10-4Pa, being filled with high-purity argon gas makes the pressure inside furnace chamber reach 40Pa, then
By Al-Si-Mg alloy melting and alloy melt is drawn into prepares the conjunction that diameter is 5mm, length is 70mm in water cooled copper mould
Golden stick.
2. a kind of Al-Si-Mg aluminium alloy according to claim 1, it is characterised in that: the compression strength of the aluminium alloy is
349-562MPa, yield strength 290-520MPa, plastic strain 9.5-35.6%, hardness 77.3-122.2HBW, resistance
Rate is 0.09-0.11 μ Ω m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610885981.1A CN106399765B (en) | 2016-10-11 | 2016-10-11 | Al-Si-Mg aluminium alloy and its preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610885981.1A CN106399765B (en) | 2016-10-11 | 2016-10-11 | Al-Si-Mg aluminium alloy and its preparation process |
Publications (2)
| Publication Number | Publication Date |
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| CN106399765A CN106399765A (en) | 2017-02-15 |
| CN106399765B true CN106399765B (en) | 2019-02-26 |
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| CN201610885981.1A Active CN106399765B (en) | 2016-10-11 | 2016-10-11 | Al-Si-Mg aluminium alloy and its preparation process |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106967905B (en) * | 2017-03-14 | 2018-06-26 | 上海爱邦新型包装材料有限公司 | A kind of preparation method of low bulk high temperature aluminium alloys layered electronic encapsulating material |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE502007002411D1 (en) * | 2007-05-24 | 2010-02-04 | Rheinfelden Aluminium Gmbh | Heat-resistant aluminum alloy |
| JP2010531388A (en) * | 2007-06-29 | 2010-09-24 | 東北大学 | Structural material of Al alloy containing Mg and high Si and method for producing the same |
| CN101462166A (en) * | 2007-12-20 | 2009-06-24 | 北京有色金属研究总院 | Method for preparing spray forming hypereutectic aluminum silicon alloy |
| CN102513721B (en) * | 2011-12-22 | 2015-09-09 | 浙江大学 | A kind of high-strength aluminum alloy solder for brazing at medium temperature and preparation method thereof |
| CN103451487B (en) * | 2013-03-01 | 2015-09-23 | 湖南理工学院 | A kind of containing magnesium Al-30Si aluminium alloy and preparation technology thereof |
| CN105522156B (en) * | 2014-10-23 | 2018-01-09 | 东睦新材料集团股份有限公司 | A kind of manufacture method of powder metallurgy silumin compressor piston |
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