CN106399767B - A kind of Al-42Si aluminium alloy and its preparation process containing Sr - Google Patents
A kind of Al-42Si aluminium alloy and its preparation process containing Sr Download PDFInfo
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- CN106399767B CN106399767B CN201610888027.8A CN201610888027A CN106399767B CN 106399767 B CN106399767 B CN 106399767B CN 201610888027 A CN201610888027 A CN 201610888027A CN 106399767 B CN106399767 B CN 106399767B
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- aluminium alloy
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- water cooled
- melting
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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
-
- 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
-
- 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 kind of Al-42Si alloy and its preparation process containing Sr.The aluminium alloy is to use non-consumable arc furnace melting Al-Si-Sr 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-Sr alloy sample is that suitable Al-Si-Sr 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-Sr alloy melting and alloy melt is drawn into water cooled copper mould.The chemical component of the alusil alloy be 0.2-0.8wt%Sr, 42wt%Si, other be Al, compression strength 405-450MPa, hardness 75-90HBW, resistivity are 0.09-0.12 μ Ω m.
Description
Technical field
The present invention relates to a kind of Al-42Si aluminium alloy and its preparation process containing Sr.
Background technique
High silicon Al-Si alloy is since its specific strength and hardness are high, density is small, anti-corrosion and wear-resisting property is strong, high-temperature behavior
Well, linear expansion coefficient is small, the capacity of heat transmission is strong, at low cost, is the ideal of engine piston, accurate wear part and electronic packing piece
Material.However silumin shows brittleness since primary silicon is coarse, application is restricted.One side Metamorphism treatment is
Pattern, size and the important method of distribution for improving primary silicon or Eutectic Silicon in Al-Si Cast Alloys, improve the performance of silumin.On the other hand logical
Too fast rapid hardening can further improve the form and distribution of the phase in silumin admittedly, improve the various property of silumin
Energy.Therefore, had great importance using quick solidification and the rotten linkage method preparation Al-Si-Sr silumin of Sr.
Summary of the invention
The purpose of the present invention is to provide a kind of Al-42Si aluminium alloy and its preparation process containing Sr.
The purpose of the present invention is what is be achieved through the following technical solutions: a kind of Al-42Si aluminium alloy containing Sr, feature exist
In, include the following steps: for suitable Al-Si-Sr aluminium alloy ingots to be put into the copper crucible of non-consumable arc furnace, then will
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 by Al-Si-Sr alloy
It melts and is drawn into alloy melt and prepare 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 to measure compression strength respectively, is measured with digital brinell hardness tester
Hardness, with four electrode method measured resistivity.
The chemical component of silumin of the present invention containing Sr is 0.2-0.8wt% Sr, 42wt%Si, other be Al, resist
Compressive Strength is 405-450MPa, hardness 75-90HBW, resistivity are 0.09-0.12 μ Ω m.
Specific embodiment
Below according to specific embodiment, the invention will be further described:
Embodiment 1
It weighs the Al-Si-Sr aluminium alloy ingots 10g that Sr content 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-Sr alloy melting and by alloy melt prepare diameter be 5mm, length 70mm
Alloy bar.Compression strength is 415MPa, hardness 75HBW, resistivity are 0.09 μ Ω m.
Embodiment 2
It weighs the Al-Si-Sr aluminium alloy ingots 10g that Sr content 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-Sr alloy melting and by alloy melt prepare diameter be 5mm, length 70mm
Alloy bar.Compression strength is 450MPa, hardness 90HBW, resistivity are 0.10 μ Ω m.
Embodiment 3
It weighs the Al-Si-Sr aluminium alloy ingots 10g that Sr content is 0.8wt% 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-Sr alloy melting and by alloy melt prepare diameter be 5mm, length 70mm
Alloy bar.Compression strength is 405MPa, hardness 80HBW, resistivity are 0.12 μ Ω m.
Claims (2)
1. a kind of Al-42Si aluminium alloy containing Sr, it is characterised in that: the chemical component of the aluminium alloy is 42.0wt%Si, 0.2-
0.8wt%Sr, it is other be Al;Include the following steps: suitable Al-Si-Sr 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-Sr 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-42Si aluminium alloy containing Sr according to claim 1, it is characterised in that: the resistance to compression of the aluminium alloy
Intensity is 405-450MPa, hardness 75-90HBW, resistivity are 0.09-0.12 μ Ω m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888027.8A CN106399767B (en) | 2016-10-12 | 2016-10-12 | A kind of Al-42Si aluminium alloy and its preparation process containing Sr |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610888027.8A CN106399767B (en) | 2016-10-12 | 2016-10-12 | A kind of Al-42Si aluminium alloy and its preparation process containing Sr |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106399767A CN106399767A (en) | 2017-02-15 |
| CN106399767B true CN106399767B (en) | 2019-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610888027.8A Active CN106399767B (en) | 2016-10-12 | 2016-10-12 | A kind of Al-42Si aluminium alloy and its preparation process containing Sr |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1752249A (en) * | 2005-10-14 | 2006-03-29 | 上海大学 | Self-lubricating high-wear-proof hypereutectic Al-Si alloy |
| CN1810999A (en) * | 2005-01-25 | 2006-08-02 | 不伦瑞克公司 | Aluminum-silicon alloy with reduced soldering to die-casting die |
| CN103451486A (en) * | 2013-02-28 | 2013-12-18 | 湖南理工学院 | Al-30Si aluminum alloy containing Sr, B, Ti and Zr and preparation process thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE502007002411D1 (en) * | 2007-05-24 | 2010-02-04 | Rheinfelden Aluminium Gmbh | Heat-resistant aluminum alloy |
| GB2470056B (en) * | 2009-05-07 | 2013-09-11 | Nexeon Ltd | A method of making silicon anode material for rechargeable cells |
| 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 |
-
2016
- 2016-10-12 CN CN201610888027.8A patent/CN106399767B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1810999A (en) * | 2005-01-25 | 2006-08-02 | 不伦瑞克公司 | Aluminum-silicon alloy with reduced soldering to die-casting die |
| CN1752249A (en) * | 2005-10-14 | 2006-03-29 | 上海大学 | Self-lubricating high-wear-proof hypereutectic Al-Si alloy |
| CN103451486A (en) * | 2013-02-28 | 2013-12-18 | 湖南理工学院 | Al-30Si aluminum alloy containing Sr, B, Ti and Zr and preparation process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 喷射成型Al-Si系高硅铝合金组织与性能的研究;李浩;《中国优秀硕士学位论文全文数据库工程科技1辑》;20130315;第16页 |
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| CN106399767A (en) | 2017-02-15 |
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