CN105483574A - A356 alloy aging process - Google Patents
A356 alloy aging process Download PDFInfo
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- CN105483574A CN105483574A CN201410475894.XA CN201410475894A CN105483574A CN 105483574 A CN105483574 A CN 105483574A CN 201410475894 A CN201410475894 A CN 201410475894A CN 105483574 A CN105483574 A CN 105483574A
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Abstract
The invention discloses an A356 alloy aging process. Solution treatment and T6/6 treatment are adopted in the process, and T6/6 treatment comprises three stages including high-temperature aging strengthening, low-temperature regression treatment, and re-aging at a high temperature; and the tensile strength and the elongation are obviously improved, the hardness is high, and the aging process is simple.
Description
Technical field
The invention belongs to field of material technology, relate to a kind of A356 alloy aging technique.
Background technology
A356 aluminium alloy main application: various shell, aviation pump component, aviation machine joint, automotive transmission, belt wheel, fuel container, maximum heat resistance Zhi Yingli portion material, other machine tool components.And prior art takes optimal processing parameter to A356 alloy T6 thermal treatment: solution treatment 535 DEG C/10h, quench delay is less than 10s, ageing treatment 165 DEG C/5h, then air cooling, treatment effect is heat treated A356 aluminium alloy relatively, obtaining tensile strength by such technique is 301.8MPa, and elongation is 5%, and hardness is 83.2HBS.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of A356 alloy aging technique, mechanical property is good, and hardness is high, to overcome prior art problem.
The technical scheme that the present invention takes is: a kind of A356 alloy aging technique, comprises the following steps:
(1) solution treatment: temperature 535 DEG C, shrend, time 10h;
(2) high-temperature aging strengthening: temperature 165 DEG C, time 5h;
(3) regression treatment of low temperature: temperature 65 DEG C, time 3h;
(4) timeliness again under comparatively high temps: temperature 130 DEG C, time 4h.
In described step (1), quench delay is less than 10s.
Beneficial effect of the present invention: compared with prior art, the present invention adopts the method to the process of A356 alloy interrupted ageing, and effect is as shown in table 1, and beneficial effect is as follows:
(1) tensile strength is up to 335.4MPa, improves 76.2%, than through traditional T6 process raising 11.3% than during non-thermal treatment.
(2) elongation after fracture reaches 7%, improves 40% than traditional T6 process.
(3) Brinell hardness is 93.3, improves 29% than during non-thermal treatment, improves nearly 12% than the alloy rigidity of traditional T6 process simultaneously.
Embodiment
Embodiment: a kind of A356 alloy aging technique, comprises the following steps:
(1) solution treatment: temperature 535 DEG C, shrend, time 10h;
(2) high-temperature aging strengthening: temperature 165 DEG C, time 5h;
(3) regression treatment of low temperature: temperature 65 DEG C, time 3h;
(4) timeliness again under comparatively high temps: temperature 130 DEG C, time 4h.
In described step (1), quench delay is less than 10s.
By with upper type aging strengthening model, allow A356 alloy mechanical property and hardness significantly improve, tensile strength improves 11.3%, and elongation improves 40%, and hardness improves 12%.
Claims (2)
1. an A356 alloy aging technique, is characterized in that: comprise the following steps:
(1) solution treatment: temperature 535 DEG C, shrend, time 10h;
(2) high-temperature aging strengthening: temperature 165 DEG C, time 5h;
(3) regression treatment of low temperature: temperature 65 DEG C, time 3h;
(4) timeliness again under comparatively high temps: temperature 130 DEG C, time 4h.
2. a kind of A356 alloy aging technique as described in claim 1, is characterized in that: in described step (1), quench delay is less than 10s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410475894.XA CN105483574A (en) | 2014-09-18 | 2014-09-18 | A356 alloy aging process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410475894.XA CN105483574A (en) | 2014-09-18 | 2014-09-18 | A356 alloy aging process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105483574A true CN105483574A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410475894.XA Pending CN105483574A (en) | 2014-09-18 | 2014-09-18 | A356 alloy aging process |
Country Status (1)
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| CN (1) | CN105483574A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107022725A (en) * | 2017-04-20 | 2017-08-08 | 北京科技大学 | A kind of Technology for Heating Processing for improving ageing strengthening type Al Mg Zn alloy corrosion among crystalline grains |
| CN108318337A (en) * | 2018-02-01 | 2018-07-24 | 嘉兴市特种设备检验检测院 | A kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging treatment process |
-
2014
- 2014-09-18 CN CN201410475894.XA patent/CN105483574A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107022725A (en) * | 2017-04-20 | 2017-08-08 | 北京科技大学 | A kind of Technology for Heating Processing for improving ageing strengthening type Al Mg Zn alloy corrosion among crystalline grains |
| CN108318337A (en) * | 2018-02-01 | 2018-07-24 | 嘉兴市特种设备检验检测院 | A kind of thermoelectricity station-service Novel iron ferritic type heat resisting steel high-temperature aging treatment process |
| CN108318337B (en) * | 2018-02-01 | 2020-11-03 | 嘉兴市特种设备检验检测院 | High-temperature aging treatment process for novel ferrite heat-resistant steel for thermal power plant |
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Legal Events
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160413 |