CN104745985A - Heat treatment technology of 7050 high-strength aluminum alloy forge piece - Google Patents
Heat treatment technology of 7050 high-strength aluminum alloy forge piece Download PDFInfo
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- CN104745985A CN104745985A CN201310724802.2A CN201310724802A CN104745985A CN 104745985 A CN104745985 A CN 104745985A CN 201310724802 A CN201310724802 A CN 201310724802A CN 104745985 A CN104745985 A CN 104745985A
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Abstract
The invention discloses a heat treatment technology of a 7050 high-strength aluminum alloy forge piece. In a solid solution process, remaining stress in a forge piece forming process can be effectively removed, but, in a quenching process, large tensile stress can be formed on the surface of the forge piece, and the large tensile stress is related to the large internal and external temperature gradient of the forge piece in the quenching process. According to technological requirements, cold compression of different deformation degrees is carried out on the forge piece, and then it is found that 3 percent compression amount not only can remove the stress on the surface of the forge piece, but also enables very beneficial compressive stress to remain in the force piece, and therefore crack formation in the follow-up treatment process can be effectively controlled. Through the research, reasonability of design of the heat treatment technology of the 7050 high-strength aluminum alloy forge piece is verified, and certain engineering reference value is achieved.
Description
Technical field
The invention belongs to casting technology field, be specifically related to a kind of thermal treatment process of 7050 high strength alumin ium alloy forging.
Background technology
7050 high strength alumin ium alloy supporting capacitys are excellent, be applicable to making all kinds of structural part, its heat processing technique mainly contains casting, extruding, rolling and forging etc. and structural part intensity that forging process obtains is maximum, fracture toughness property is the highest, is more suitable for for industrial circle application such as aerospace.But, violent and the phenomenon that a large amount of plug is long-pending of dislocation motion is there is in blank in forging process, cause stress raisers, and, a large amount of Second Phase Particles is there is without in thermal treatment forging, seriously reduce plasticity and the toughness of forging, and likely make forging in use fracture and failure occur, need to carry out rational thermal treatment to forging for this reason.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, a kind of thermal treatment process of 7050 high strength alumin ium alloy forging is provided, improve plasticity and the toughness of forging.
The thermal treatment process of 7050 high strength alumin ium alloy forging provided by the invention, comprises the following steps: 465 ± 3 DEG C of solid solutions, quench cooled, cold reduction, 120 ~ 125 DEG C × 5 ~ 8h+150 ~ 200 DEG C × 10 ~ 15h timeliness; During forging solution treatment, water temperature is less demanding in 35 DEG C, and after forging solution treatment cold reduction 1% ~ 5% tension set to eliminate unrelieved stress, then artificial aging; The timed interval proceeding to next procedure after simultaneously controlling solution treatment is no more than 2h.
The thermal treatment process of 7050 high strength alumin ium alloy forging provided by the invention, its beneficial effect is, solution treatment can by non-equilibrium for overwhelming majority crystallization phases solid solution, and eliminates the impact of Second Phase Particle on forging toughness and properties for follow; Energy of deformation of colding pressing after solid solution eliminates the unrelieved stress that causes of quenching, and makes to exist in forging the dislocation glide of some amount simultaneously and climbs, therefore, it is possible to the motion of the second phase particles of separating out after hindering forging timeliness, and raising forging intensity; Meanwhile, ageing treatment can separate out a large amount of dispersed granules, and these tiny particles can play the effect of pinning dislocation, and dislocation motion is obstructed, thus greatly improves the intensity of forging.
Embodiment
Below in conjunction with an embodiment, the thermal treatment process of 7050 high strength alumin ium alloy forging provided by the invention is described in detail.
Embodiment
The thermal treatment process of the 7050 high strength alumin ium alloy forging of the present embodiment, comprises the following steps: 465 DEG C of solid solutions, quench cooled, cold reduction, 125 DEG C × 6h+180 DEG C × 12h timeliness; Water temperature 25 DEG C during forging solution treatment, and after forging solution treatment cold reduction 4% tension set to eliminate unrelieved stress, then artificial aging; Proceed to the timed interval 1.5h of next procedure after controlling solution treatment simultaneously.
Claims (1)
1. a thermal treatment process for 7050 high strength alumin ium alloy forging, is characterized in that: said method comprising the steps of:
465 ± 3 DEG C of solid solutions, quench cooled, cold reduction, 120 ~ 125 DEG C × 5 ~ 8h+150 ~ 200 DEG C × 10 ~ 15h timeliness; During forging solution treatment, water temperature is less demanding in 35 DEG C, and after forging solution treatment cold reduction 1% ~ 5% tension set to eliminate unrelieved stress, then artificial aging; The timed interval proceeding to next procedure after simultaneously controlling solution treatment is no more than 2h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310724802.2A CN104745985A (en) | 2013-12-25 | 2013-12-25 | Heat treatment technology of 7050 high-strength aluminum alloy forge piece |
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| CN201310724802.2A CN104745985A (en) | 2013-12-25 | 2013-12-25 | Heat treatment technology of 7050 high-strength aluminum alloy forge piece |
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| CN104745985A true CN104745985A (en) | 2015-07-01 |
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| CN201310724802.2A Pending CN104745985A (en) | 2013-12-25 | 2013-12-25 | Heat treatment technology of 7050 high-strength aluminum alloy forge piece |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088113A (en) * | 2015-08-27 | 2015-11-25 | 东北轻合金有限责任公司 | Method for manufacturing aluminum alloy free forge piece for spaceflight |
| CN105908110A (en) * | 2016-06-14 | 2016-08-31 | 山东南山铝业股份有限公司 | Method for reducing residue stress of high-strength aluminum alloy complex die forgings |
| CN108044118A (en) * | 2017-12-03 | 2018-05-18 | 中国直升机设计研究所 | A kind of manufacturing method for spraying 7055 aluminium alloy large-sized components of shaping |
| CN108754363A (en) * | 2018-06-22 | 2018-11-06 | 中南大学 | Regulate and control the method for aluminium alloy element stress relaxation behavior |
| CN109112449A (en) * | 2018-10-23 | 2019-01-01 | 湖南大学 | A method of eliminating aluminum alloy die forgings residual stress |
| CN109234653A (en) * | 2018-10-23 | 2019-01-18 | 湖南大学 | A method of cutting down large complicated aluminum alloy die forgings residual stress |
| CN109338257A (en) * | 2018-12-20 | 2019-02-15 | 西南铝业（集团）有限责任公司 | A kind of method of aluminum alloy forge piece and the uniformity for improving aluminum alloy forge piece |
| CN110230014A (en) * | 2019-06-04 | 2019-09-13 | 燕山大学 | A method of regulation aluminum alloy forge piece grain structure uniformity |
| CN111014539A (en) * | 2019-12-24 | 2020-04-17 | 陕西宏远航空锻造有限责任公司 | Method for matching conductivity of aluminum alloy forging with longitudinal yield strength |
| CN111270114A (en) * | 2020-03-30 | 2020-06-12 | 天津忠旺铝业有限公司 | Preparation process of high-strength 7150 aluminum alloy medium plate |
| CN112921255A (en) * | 2021-01-15 | 2021-06-08 | 烟台南山学院 | Method for reducing quenching residual stress of 7000 series aluminum alloy thick plate and aluminum alloy plate |
| CN114196894A (en) * | 2021-10-25 | 2022-03-18 | 陕西宏远航空锻造有限责任公司 | 7XXX series aluminum alloy residual stress reduction method for aviation |
| CN114411071A (en) * | 2022-01-18 | 2022-04-29 | 宁波江丰电子材料股份有限公司 | Treatment method for reducing quenching residual stress of aluminum alloy material and aluminum alloy material |
-
2013
- 2013-12-25 CN CN201310724802.2A patent/CN104745985A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088113A (en) * | 2015-08-27 | 2015-11-25 | 东北轻合金有限责任公司 | Method for manufacturing aluminum alloy free forge piece for spaceflight |
| CN105908110A (en) * | 2016-06-14 | 2016-08-31 | 山东南山铝业股份有限公司 | Method for reducing residue stress of high-strength aluminum alloy complex die forgings |
| CN105908110B (en) * | 2016-06-14 | 2018-05-15 | 山东南山铝业股份有限公司 | A kind of method for reducing high strength alumin ium alloy complexity forging part residual stress |
| CN108044118A (en) * | 2017-12-03 | 2018-05-18 | 中国直升机设计研究所 | A kind of manufacturing method for spraying 7055 aluminium alloy large-sized components of shaping |
| CN108754363A (en) * | 2018-06-22 | 2018-11-06 | 中南大学 | Regulate and control the method for aluminium alloy element stress relaxation behavior |
| CN109234653B (en) * | 2018-10-23 | 2020-07-07 | 湖南大学 | Method for reducing residual stress of large complex aluminum alloy die forging |
| CN109234653A (en) * | 2018-10-23 | 2019-01-18 | 湖南大学 | A method of cutting down large complicated aluminum alloy die forgings residual stress |
| CN109112449B (en) * | 2018-10-23 | 2020-04-24 | 湖南大学 | Method for eliminating residual stress of aluminum alloy die forging |
| CN109112449A (en) * | 2018-10-23 | 2019-01-01 | 湖南大学 | A method of eliminating aluminum alloy die forgings residual stress |
| CN109338257A (en) * | 2018-12-20 | 2019-02-15 | 西南铝业（集团）有限责任公司 | A kind of method of aluminum alloy forge piece and the uniformity for improving aluminum alloy forge piece |
| CN110230014A (en) * | 2019-06-04 | 2019-09-13 | 燕山大学 | A method of regulation aluminum alloy forge piece grain structure uniformity |
| CN111014539A (en) * | 2019-12-24 | 2020-04-17 | 陕西宏远航空锻造有限责任公司 | Method for matching conductivity of aluminum alloy forging with longitudinal yield strength |
| CN111014539B (en) * | 2019-12-24 | 2022-03-15 | 陕西宏远航空锻造有限责任公司 | Method for matching conductivity of aluminum alloy forging with longitudinal yield strength |
| CN111270114A (en) * | 2020-03-30 | 2020-06-12 | 天津忠旺铝业有限公司 | Preparation process of high-strength 7150 aluminum alloy medium plate |
| CN112921255A (en) * | 2021-01-15 | 2021-06-08 | 烟台南山学院 | Method for reducing quenching residual stress of 7000 series aluminum alloy thick plate and aluminum alloy plate |
| CN114196894A (en) * | 2021-10-25 | 2022-03-18 | 陕西宏远航空锻造有限责任公司 | 7XXX series aluminum alloy residual stress reduction method for aviation |
| CN114411071A (en) * | 2022-01-18 | 2022-04-29 | 宁波江丰电子材料股份有限公司 | Treatment method for reducing quenching residual stress of aluminum alloy material and aluminum alloy material |
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Application publication date: 20150701 |
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| WD01 | Invention patent application deemed withdrawn after publication |