回归再时效工艺对7055铝合金板材组织及性能的影响

doi:10.13251/j.issn.0254-6051.2023.04.021

金属热处理 ›› 2023, Vol. 48 ›› Issue (4): 130-136.DOI: 10.13251/j.issn.0254-6051.2023.04.021

回归再时效工艺对7055铝合金板材组织及性能的影响

程志远^1,2, 孙宁^1,2, 郭丰佳^1,2, 王志雄¹, 李涛¹, 王经涛^1,2

1.山东南山铝业股份有限公司国家铝合金压力加工工程技术研究中心, 山东龙口 265713;
2.山东南山科学技术研究院有限公司有色金属产业研究院, 山东龙口 265713

收稿日期:2022-12-02 修回日期:2023-01-13 发布日期:2023-05-27
通讯作者: 孙宁,工程师,硕士,E-mail:ningsun95@163.com.cn
作者简介:程志远(1978—),男,工程师,主要研究方向为铝合金加工及热处理,E-mail:chengzhiyuan@nanshan.com.cn。

Effects of retrogression and re-aging process on microstructure and properties of 7055 aluminum alloy sheet

Cheng Zhiyuan^1,2, Sun Ning^1,2, Guo Fengjia^1,2, Wang Zhixiong¹, Li Tao¹, Wang Jingtao^1,2

1. National Engineering Research Center for Plastic Working of Aluminum Alloys, Shandong Nanshan Aluminum Co., Ltd., Longkou Shandong 265713, China;
2. Nonferrous Metal Industry Research Institute, Shandong Nanshan Academy of Science and Technology Co., Ltd., Longkou Shandong 265713, China

Received:2022-12-02 Revised:2023-01-13 Published:2023-05-27

摘要/Abstract

摘要： 通过TEM、SEM、DSC等分析及拉伸试验、电导率测试,对7055铝合金板材回归再时效后的显微组织、性能进行了系统研究。结果表明,随着回归时间的延长,回归再时效处理后的合金强度先升高后降低,导电率单调升高。与T6态相比,合金经回归再时效处理后,晶界析出相间距变大,呈断续分布,且晶内强化相的尺寸也发生了一定程度的粗化。当合金板材的回归再时效工艺为121 ℃×24 h+170 ℃×30 min+121 ℃×24 h时,7055铝合金板材的综合性能最优,抗拉强度达630.75 MPa,屈服强度达588.75 MPa,导电率达34.75%IACS,断裂机制为混合型断裂。

关键词: 7055铝合金, 回归再时效, 力学性能, 导电性

Abstract: Microstructure and mechanical properties of 7055-aluminum alloy sheet after retrogression and re-aging were systematically studied by means of TEM, SEM, DSC, tensile test and conductivity testing. The results show that with the extension of retrogression time, strength of the alloy increases firstly and then decreases, meanwhile, the conductivity monotonically increases through the whole process. Compared with T6 state, after retrogression and re-aging, the precipitated phase space on grain boundary increases and intermittently distributes, and the size of strengthening phase in the crystal is grown to a certain extent. When the retrogression and re-aging process is 121 ℃×24 h+170 ℃×30 min+121 ℃×24 h, the 7055 aluminum alloy exhibits excellent comprehensive properties, of which the tensile strength is 630.75 MPa, the yield strength is 588.75 MPa, the conductivity is 34.75%IACS, and the fracture mechanism is mixed fracture.

Key words: 7055 aluminum alloy, retrogression and re-aging, mechanical properties, conductivity

中图分类号:

TG146.2⁺1

程志远, 孙宁, 郭丰佳, 王志雄, 李涛, 王经涛. 回归再时效工艺对7055铝合金板材组织及性能的影响[J]. 金属热处理, 2023, 48(4): 130-136.

Cheng Zhiyuan, Sun Ning, Guo Fengjia, Wang Zhixiong, Li Tao, Wang Jingtao. Effects of retrogression and re-aging process on microstructure and properties of 7055 aluminum alloy sheet[J]. Heat Treatment of Metals, 2023, 48(4): 130-136.

参考文献

[1]刘乐, 石大鹏, 孙晓军, 等. 航天用7055高强铝合金热变形行为及热加工图[J]. 特种铸造及有色合金, 2022, 42(5): 564-568.
Liu Le, Shi Dapeng, Sun Xiaojun, et al. Hot deformation behavior and hot working diagram of 7055 high strength aluminum alloy for aerospace [J]. Special Casting and Nonferrous Alloys, 2022, 42(5): 564-568.
[2]张兆刚, 张存生, 赵国群, 等. 固溶工艺对7055铝合金组织和性能影响[J]. 中南大学学报(自然科学版), 2021, 52(9): 3143-3152.
Zhang Zhaogang, Zhang Cunsheng, Zhao Guoqun, et al. Effect of solid solution process on microstructure and properties of 7055 aluminum alloy [J]. Journal of Central South University (Science and Technology), 2021, 52(9): 3143-3152.
[3]Tang J M, Shen Y F. Numerical simulation and experimental investigation of friction stir lap welding between aluminum alloys AA2024 and AA7075 [J]. Journal of Alloys and Compounds, 2016(666): 493-500.
[4]Sander W, Meissner I K L. Der einflu β der verbindung MgZn₂, auf die vergutbarkeit von aluminum legierungen [J]. Zeitschrift Fur Anorganische Chemie, 1926, 154(1): 144-151.
[5]孔令飞. 超高强Al-8.2Zn-2.1Mg-2.3Cu合金均匀化和固溶处理的研究[D]. 沈阳: 东北大学, 2016.
Kong Lingfei. Research on homogenization and solution treatment of ultra high-strength Al-8.2Zn-2.1Mg-2.3Cu alloy [D]. Shenyang: Northeastern University, 2016.
[6]王少华, 钟立伟, 马志锋. 高温短时固溶处理对超高强Al-Zn-Mg-Cu合金锻件组织与性能的影响[J]. 金属热处理, 2022, 47(7): 20-26.
Wang Shaohua, Zhong Liwei, Ma Zhifeng. Effect of high-temperature short-time solution treatment on microstructure and properties of ultra-high strength Al-Zn-Mg-Cu alloy forging [J]. Heat Treatment of Metals, 2022, 47(7): 20-26.
[7]Williams J C, Starke E A. Progress in structural materials for aerospace [J]. Acta Materialia, 2003, 51(19): 5775-5799.
[8]薛克敏, 李云辉, 许兵, 等. 时效制度对新型Al-Zn-Mg-Cu合金组织与性能的影响[J]. 金属热处理, 2021, 46(3): 1-7.
Xue Kemin, Li Yunhui, Xu Bing, et al. Effect of aging on microstructure and properties of new Al-Zn-Mg-Cu alloy [J]. Heat Treatment of Metals, 2021, 46(3): 1-7.
[9]刘向丽. 双级时效对Al-Zn-Mg-Cu合金组织与性能的影响[J]. 热加工工艺, 2021, 50(8): 127-129.
Liu Xiangli. Effect of two-stage aging on microstructure and properties of Al-Zn-Mg-Cu alloy[J]. Hot Working Technology, 2021, 50(8): 127-129.
[10]Cina B. Reducing the susceptibility of alloys, particularly aluminum alloys, to stress corrosion cracking: US 3856584 [P]. 1974-12-24.
[11]马思怡, 张伟健, 苏睿明, 等. 7×××系铝合金回归再时效的研究现状[J]. 有色金属科学与工程, 2022, 13(2): 38-50.
Ma Siyi, Zhang Weijian, Su Ruiming, et al. Research status of regression and reaging on 7××× series aluminum alloy [J]. Nonferrous Metals Science and Engineering, 2022, 13(2): 38-50.
[12]高依飞. 回归再时效对7150铝合金的显微组织和断裂行为的影响[D]. 哈尔滨: 哈尔滨工业大学, 2018.
Gao Yifei. Effect of retrogression and re-aging on microstructure and fracture behavior of 7150 aluminum alloy [D]. Harbin: Harbin Institute of Technology, 2018.
[13]Ahmet A. Optimization of the strength and intergranular corrosion properties of the 7075 Al alloy by retrogression and reaging [J]. Cheminform, 1989, 20(23): 170-178.
[14]Gerard M L, David E L. The influence of microstructure and strength on the fracture mode and toughness of 7××× series aluminum alloys [J]. Mettallurgical Transactions A, 1982, 13(3): 411-425.
[15]韩念梅, 张新明, 刘胜胆, 等. 回归再时效对7050铝合金强度和断裂韧性的影响[J]. 中国有色金属学报, 2012, 22(7): 1871-1882.
Han Nianmei, Zhang Xinming, Liu Shengdan, et al. Effects of retrogression and reaging on strength and fracture toughness of aluminum alloy 7050 [J]. The Chinese Journal of Nonferrous Metals, 2012, 22(7): 1871-1882.
[16]Wolverton C. Crystal structure and stability of complex precipitation phase in Al-Cu-Mg-Si and Al-Zn-Mg alloys [J]. Acta Materialia, 2001, 49(16): 3129-3142.
[17]宁爱林, 蒋寿生, 彭北山. 铝合金的力学性能及其电导率[J]. 轻金属, 2005(6): 34-36.
Ning Ailin, Jiang Shousheng, Peng Beishan. Mechanical properties and electrical conductivity of aluminum alloys [J]. Light Metals, 2005(6): 34-36.
[18]施娟娟, 陈忠家, 谢元福, 等. 回归再时效对7×××系铝合金强度及耐腐蚀性能的影响[J]. 铝加工, 2020(1): 13-17.
Shi Juanjuan, Chen Zhongjia, Xie Yuanfu, et al. Effect of RRA on strength and corrosion resistance of 7××× aluminum alloy [J]. Aluminum Fabrication, 2020(1): 13-17.
[19]黄乐瑜. 回归再时效处理制度对7055铝合金组织与性能的影响[D]. 长沙: 中南大学, 2011.
Huang Leyu. Effect of retrogression and re-aging treatment on microstructure and properties of 7055 aluminum alloy [D]. Changsha: Central South University, 2011.

回归再时效工艺对7055铝合金板材组织及性能的影响

Effects of retrogression and re-aging process on microstructure and properties of 7055 aluminum alloy sheet

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