CN106244868B - A kind of Al-42Si aluminium alloy and its preparation process containing B - Google Patents
A kind of Al-42Si aluminium alloy and its preparation process containing B Download PDFInfo
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- CN106244868B CN106244868B CN201610887581.4A CN201610887581A CN106244868B CN 106244868 B CN106244868 B CN 106244868B CN 201610887581 A CN201610887581 A CN 201610887581A CN 106244868 B CN106244868 B CN 106244868B
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- alloy
- 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 B.The aluminium alloy is to use non-consumable arc furnace melting Al-Si-B 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-B alloy sample is that suitable Al-Si-B 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-B alloy melting and alloy melt is drawn into water cooled copper mould.The chemical component of the alusil alloy be 0.1-0.3wt%B, 42wt%Si, other be Al, compression strength 433.7-580.4MPa, plastic strain 36.7-40.4%, hardness 55.0-77.8HBW, resistivity are 0.09-0.11 μ Ω m.
Description
Technical field
The present invention relates to a kind of Al-42Si aluminium alloy and its preparation process containing B.
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-B silumin of B.
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 B.
The purpose of the present invention is what is be achieved through the following technical solutions: a kind of Al-42Si aluminium alloy containing B, feature exist
In, include the following steps: for suitable Al-Si-B 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 melts Al-Si-B 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 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 B be 0.1-0.3wt%B, 42wt%Si, other be Al, resistance to compression
Intensity is 433.7-580.4MPa, plastic strain 36.7-40.4%, hardness 55.0-77.8HBW, resistivity 0.09-
0.11μΩm。
Specific embodiment
Below according to specific embodiment, the invention will be further described:
Embodiment 1
It weighs the Al-Si-B aluminium alloy ingots 10g that B content is 0.1wt% in the balance, puts it into non-consumable arc furnace
Copper crucible in, 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, so
It by Al-Si-B alloy melting and alloy melt is drawn into prepares the conjunction that diameter is 5mm, length is 70mm in water cooled copper mould afterwards
Golden stick.Compression strength is 433.7MPa, plastic strain 36.7%, hardness 55HBW, resistivity are 0.11 μ Ω m.
Embodiment 2
It weighs the Al-Si-B aluminium alloy ingots 10g that B content is 0.2wt% in the balance, puts it into non-consumable arc furnace
Copper crucible in, 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, so
It by Al-Si-B alloy melting and alloy melt is drawn into prepares the conjunction that diameter is 5mm, length is 70mm in water cooled copper mould afterwards
Golden stick.Compression strength is 580.4MPa, plastic strain 37.2%, hardness 62.7HBW, resistivity are 0.10 μ Ω m.
Embodiment 3
It weighs the Al-Si-B aluminium alloy ingots 10g that B content is 0.3wt% in the balance, puts it into non-consumable arc furnace
Copper crucible in, 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, so
It by Al-Si-B alloy melting and alloy melt is drawn into prepares the conjunction that diameter is 5mm, length is 70mm in water cooled copper mould afterwards
Golden stick.Compression strength is 496.7MPa, plastic strain 40.4%, hardness 77.8HBW, resistivity are 0.09 μ Ω m.
Claims (1)
1. a kind of Al-42Si aluminium alloy containing B, it is characterised in that: the chemical component of the aluminium alloy is 42.0wt%Si, 0.1-
0.3wt%B, it is other be Al, compression strength 433.7-580.4MPa, plastic strain 36.7-40.4%, hardness 55.0-
77.8HBW, resistivity are 0.09-0.11 μ Ω m;The preparation method of the aluminium alloy includes the following steps: suitable Al-Si-
B 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 is filled with high-purity argon
Gas makes the pressure inside furnace chamber reach 40Pa, then by Al-Si-B alloy melting and alloy melt is drawn into water cooled copper mould
Prepare the alloy bar that diameter is 5mm, length is 70mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887581.4A CN106244868B (en) | 2016-10-12 | 2016-10-12 | A kind of Al-42Si aluminium alloy and its preparation process containing B |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887581.4A CN106244868B (en) | 2016-10-12 | 2016-10-12 | A kind of Al-42Si aluminium alloy and its preparation process containing B |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106244868A CN106244868A (en) | 2016-12-21 |
| CN106244868B true CN106244868B (en) | 2019-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610887581.4A Active CN106244868B (en) | 2016-10-12 | 2016-10-12 | A kind of Al-42Si aluminium alloy and its preparation process containing B |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513721A (en) * | 2011-12-22 | 2012-06-27 | 浙江大学 | High-strength aluminum alloy solder for brazing at medium temperature and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104762497B (en) * | 2015-05-05 | 2017-01-25 | 湖南理工学院 | Zr-Al-Ni-Cu bulk amorphous alloy series with indoor temperature compressive plasticity and high strength |
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2016
- 2016-10-12 CN CN201610887581.4A patent/CN106244868B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513721A (en) * | 2011-12-22 | 2012-06-27 | 浙江大学 | High-strength aluminum alloy solder for brazing at medium temperature and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| "喷射成形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Ⅰ辑》;20130315(第3期);B023-20 |
| "高导电率含硼铝合金";刘顺华;《电器工业 材料专辑》;20021231;第36-37页 |
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| CN106244868A (en) | 2016-12-21 |
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