Research progress on change of microstructure of 7000 series aluminum alloy during solution treatment and aging

doi:10.13251/j.issn.0254-6051.2024.02.039

Abstract

Abstract: 7000 series aluminum alloys are widely used in industrial areas such as aerospace and transportation due to the low density, high strength and good processing performance. As a high-strength heat treatable aluminum alloy, solution treatment and aging are important steps in heat processing, the microstructural changes caused by heat treatment have a significant impact on the properties of alloys. The research status of change of microstructure of 7000 series aluminum alloy during solution treatment and aging in recent years was reviewed. The heat treatment purpose, the influencing factors of heat treatment and the microstructure evolution, as well as the influence of typical precipitation on properties of aluminum alloys were described. Finally, prospects were made for the research directions related to the microstructure of 7000 series aluminum alloys.

Key words: 7000 series aluminum alloy, solution treatment and aging, microstructure, formation mechanism

CLC Number:

TG166.3

Qi Qingwen, Bu Hengyong, Li Qin. Research progress on change of microstructure of 7000 series aluminum alloy during solution treatment and aging[J]. Heat Treatment of Metals, 2024, 49(2): 244-251.

References

[1]陈小明, 宋仁国, 李杰. 7×××系铝合金的研究现状及发展趋势[J]. 材料导报, 2009(3): 67-70.
Chen Xiaoming, Song Renguo, Li Jie. Current research status and development trends of 7××× series aluminum alloys[J]. Materials Review, 2009(3): 67-70.
[2]Cao C, Zhang D, Wang X, et al. Effects of Cu addition on the precipitation hardening response and intergranular corrosion of Al-5.2Mg-2.0Zn(wt.%) alloy[J]. Materials Characterization, 2016, 122: 177-182.
[3]Ramgopal T, Schmutz P, Frankel G S. Electrochemical behavior of thin film analogs of Mg(Zn, Cu, Al)₂[J]. Journal of the Electrochemical Society, 2001, 148(9): 348-356.
[4]杨守杰, 戴圣龙. 航空铝合金的发展回顾与展望[J]. 材料导报, 2005, 19(2): 76-80.
Yang Shoujie, Dai Shenglong. A glimpse at the development and application of aluminum alloys in aviation industry[J]. Materials Review, 2005, 19(2): 76-80.
[5]倪维源. 高速列车用7×××系高强铝合金焊接接头的疲劳行为研究[D]. 上海: 上海工程技术大学, 2015.
[6]曹德闯. 7075铝合金车身结构件冷模具淬火热成形工艺成形性模拟研究[D]. 长春: 吉林大学, 2014.
[7]Heinz A, Haszler A, Keidel C, et al. Recent development in aluminium alloys for aerospace applications[J]. Materials Science and Engineering A, 2000, 280: 102-107.
[8]王建国, 王祝堂. 航空航天变形铝合金的进展(1)[J]. 轻合金加工技术, 2013, 41(8): 1-6.
Wang Jianguo, Wang Zhutang. Advance on wrought aluminium alloys used for aeronautic and astronautic industry(1)[J]. Light Alloy Fabrication Technology, 2013, 41(8): 1-6.
[9]邓运来, 张新明. 铝及铝合金材料进展[J]. 中国有色金属学报, 2019, 29(9): 2115-2141.
Deng Yunlai, Zhang Xinming. Development of aluminium and aluminium alloy[J]. The Chinese Journal of Nonferrous Metals, 2019, 29(9): 2115-2141.
[10]陈志国, 杨文玲, 王诗勇, 等. 微合金化铝合金的研究进展[J]. 稀有金属材料与工程, 2010, 39(8): 1499-1504.
Chen Zhiguo, Yang Wenlin, Wang Shiyong, et al. Research progress of microalloyed Al alloys[J]. Rare Metal Materials and Engineering, 2010, 39(8): 1499-1504.
[11]杨金龙, 邓运来, 祁小红, 等. 过饱和7050铝合金固溶体中第二相粒子的析出动力学[J]. 中南大学学报(自然科学版), 2012, 43(7): 2528-2533.
Yang Jinlong, Deng Yunlai, Qi Xiaohong, et al. Precipitation kinetics of second-phase particles in supersaturated solid solution of 7050 aluminum alloy[J]. Journal of Central South University (Science and Technology), 2012, 43(7): 2528-2533.
[12]陆智伦, 潘清林, 陈琴, 等. 固溶处理对含Ag的Al-Cu-Mg合金力学性能和组织的影响[J]. 航空材料学报, 2011, 31(6): 24-29.
Lu Zhilun, Pan Qinglin, Chen Qin, et al. Effects of solution treatment on mechanical properties and microstructure of Al-Cu-Mg alloy with Ag addition[J]. Journal of Aeronautical Materials, 2011, 31(6): 24-29.
[13]王洪斌, 孟凡磊, 赵红阳, 等. 固溶处理对铸轧7050铝合金显微组织与性能的影响[J]. 材料热处理学报, 2013, 34(11): 99-103.
Wang Hongbin, Meng Fanlei, Zhao Hongyang, et al. Effects of solid solution treatment on microstructure and properties of cast-rolled 7050 aluminum alloy[J]. Transactions of Materials and Heat Treatment, 2013, 34(11): 99-103.
[14]戴晓元, 夏长清, 刘昌斌, 等. 固溶处理及时效对7×××铝合金组织与性能的影响[J]. 材料热处理学报, 2007, 28(4): 59-63.
Dai Xiaoyuan, Xia Changqing, Liu Changbin, et al. Effects of solution treatment and aging process on microstructure and mechanical properties of 7××× aluminium alloy[J]. Transactions of Materials and Heat Treatment, 2007, 28(4): 59-63.
[15]李志辉, 熊柏青, 张永安, 等. 7B04 铝合金的时效沉淀析出及强化行为[J]. 中国有色金属学报, 2007, 17(2): 248-253.
Li Zhihui, Xiong Baiqing, Zhang Yongan, et al. Ageing precipitation and strengthening behavior of 7B04 aluminum alloy[J]. The Chinese Journal of Nonferrous Metals, 2007, 17(2): 248-253.
[16]张志, 陈忠家, 姚奇, 等. 分级均匀化处理对7068新型高强铝合金组织及性能的影响[J]. 有色金属加工, 2014, 43(5): 13-17.
Zhang Zhi, Chen Zhongjia, Yao Qi, et al. Effect of three-step homogenization on microstructure and mechanical properties of 7068 aluminum alloy[J]. Nonferrous Metals Processing, 2014, 43(5): 13-17.
[17]李彩琼, 夏琳, 王明刚, 等. 固溶工艺对 Al-Zn-Mg-Cu 合金组织与性能的影响[J]. 材料热处理学报, 2023, 44(11): 52-61.
Li Caiqiong, Xia Lin, Wang Minggang, et al. Effect of solution process on microstructure and properties of Al-Zn-Mg-Cu alloy[J]. Transactions of Materials and Heat Treatment, 2023, 44(11): 52-61.
[18]孙宁, 王芝东, 王经涛, 等. 单级固溶对Al-Zn- Mg-Cu合金厚板组织及性能的影响[J]. 金属热处理, 2023, 48(11): 235-240.
Sun Ning, Wang Zhidong, Wang Jingtao, et al. Effect of single-stage solution treatment on microstructure and properties of Al-Zn-Mg-Cu alloy thick plate[J]. Heat Treatment of Metals, 2023, 48(11): 235-240.
[19]Song Fengxuan, Zhang Xinming, Liu Shengdan, et al. Exfoliation corrosion behavior of 7050-T6 aluminum alloy treated with various quench transfer time[J]. Transactions of Nonferrous Metals Society of China, 2014, 24: 2258-2265.
[20]张勇, 邓运来, 张新明, 等. 7050铝合金热轧板的淬火敏感性[J]. 中国有色金属学报, 2008, 18(10): 1788-1794.
Zhang Yong, Deng Yunlai, Zhang Xinming, et al. Quenching sensitivity of 7050 aluminium alloy hot-rolled plate[J]. The Chinese Journal of Nonferrous Metals, 2008, 18(10): 1788-1794.
[21]戴晓元, 熊超宇, 华熳煜. 固溶-时效对7×××系铝合金淬透性的影响[J]. 金属热处理, 2018, 43(7): 155-162.
Dai Xiaoyuan, Xiong Chaoyu, Hua Manyu. Effect of solid solution and aging on hardenability of 7 series aluminum alloy[J]. Heat Treatment of Metals, 2018, 43(7): 155-162.
[22]王学书, 聂波, 谢延翠. 热处理制度对7075铝合金电导率的影响[J]. 轻合金加工技术, 2001, 29(7): 40-49.
Wang Xueshu, Nie Bo, Xie Yancui. Effect of heat-treatment institutions on conductivity of 7075 aluminium alloy[J]. Light Alloy Fabrication Technology, 2001, 29(7): 40-49.
[23]Qi Qingwen, Li Min, Duan Yonghua, et al. Effect of solution heat treatment on the microstructure and microhardness of 7050 aluminum alloy[J]. Metals, 2023, 18: 1-14.
[24]陈敏, 叶凌英, 孙大翔, 等. 升温速率对7B04铝合金板材晶粒组织和超塑性的影响[J]. 材料工程, 2017, 45(3): 112-118.
Chen Min, Ye Lingying, Sun Daxiang, et al. Effect of heating rate on grain structure and superplasticity of 7B04 aluminum alloy sheets[J]. Journal of Materials Engineering, 2017, 45(3): 112-118.
[25]张冲, 许晓静, 张洁, 等. 固溶升温速率对Al-10.78Zn-2.78Mg-2.59Cu铝合金组织与性能的影响[J]. 机械工程材料, 2018, 42(8): 24-28.
Zhang Chong, Xu Xiaojing, Zhang Jie, et al. Effect of heating rate for solid solution on microstructure and properties of Al-10.78Zn-2.78Mg-2.59Cu aluminum alloy[J]. Materials for Mechanical Engineering, 2018, 42(8): 24-28.
[26]宁康琪, 彭北山, 盛志敬, 等. 高强铝合金的强化机制[J]. 邵阳学院学报(自然科学版), 2012, 9(4): 46-50.
Ning Kangqi, Peng Beishan, Sheng Zhijin, et al. Strengthening mechanism of high strength aluminum alloy[J]. Journal of Shaoyang University (Natural Science Edition), 2012, 9(4): 46-50.
[27]宁爱林. 析出相及其分布对高强铝合金力学性能的影响[D]. 长沙: 中南大学, 2007.
[28]Marioara C D, Lefebvre W, Andersen S J, et al. Atomic structure of hardening precipitates in an Al-Mg-Zn-Cu alloy determined by HAADF-STEM and first-principles calculations: Relation to η-MgZn₂[J]. Journal of Materials Science, 2013, 48: 3638-3651.
[29]Berg L K, Gjønnes J, Hansen V, et al. GP-zones in Al-Zn-Mg alloys and their role in artificial aging[J]. Acta Materialia, 2001, 49: 3443-3451.
[30]Lervik A, Marioara C D, Kadanik M, et al. Precipitation in an extruded AA7003 aluminium alloy: Observations of 6×××-type hardening phases[J]. Materials and Design, 2020, 186: 108204.
[31]Fan X G, Jiang D M, Meng Q C, et al. Characterization of precipitation microstructure and properties of 7150aluminium alloy[J]. Materials Science and Engineering A, 2006, 427: 130-135.
[32]Sha G, Cerezo A. Early-stage precipitation in Al-Zn-Mg-Cu alloy (7050)[J]. Acta Materialia, 2004, 52: 4503-4516.
[33]Li X Z, Hansen V, Gjønnes J, et al. HRTEM study and structure modeling of the η′ phase, the harding precipitations in commercial Al-Zn-Mg alloys[J]. Acta Materialia, 1999, 47: 2651-2659.
[34]万彩云, 陈江华, 杨修波, 等. 7×××系AlZnMgCu铝合金早中期时效强化析出相的研究[J]. 电子显微学报, 2010, 29(5): 455-460.
Wan Caiyun, Chen Jianghua, Yang Xiubo, et al. Study of the early and mid-stage hardening precipitates in a 7××× AlZnMgCu aluminium alloy[J]. Journal of Chinese Electron Microscopy Society, 2010, 29(5): 455-460.
[35]陈军洲. AA7055铝合金的时效析出行为与力学性能[D]. 哈尔滨: 哈尔滨工业大学, 2008.
[36]Komura Y, Tokunaga K. Structural studies of stacking variants in Mg-base Friauf-Laves phases[J]. Acta Crystallographica, 1980, 36: 1548-1554.
[37]Hansen V, Karlsen O B, Langsrud Y, et al. Precipitates zones and transitions during aging of Al-Zn-Mg-Zr 7000 series alloy[J]. Materials Science and Technology, 2004, 20: 185-193.
[38]Stiller K, Warren P J, Hansen V, et al. Investigation of precipitation in an Al-Zn-Mg alloy after two-step ageing treatment at 100 ℃ and 150 ℃[J]. Materials Science and Engineering A, 1999, 270: 55-63.
[39]Gladman T. Precipitation hardening in metals[J]. Materials Science and Technology, 1999, 15: 30-36.
[40]Bendo A, Matsuda K, Nishimura K, et al. The possible transition mechanism for the meta-stable phase in the 7××× aluminium[J]. Materials Science and Technology, 2020, 36: 1621-1627.
[41]Garrett G G, Knott J F. The influence of compositional and microstructural variations on the mechanism of static fracture in aluminum alloys[J]. Metallurgical Transactions A, 1978, 9: 1187-1201.
[42]Liu G, Sun J, Nan C W, et al. Experiment and multiscale modeling of the coupled influence of constituents and precipitates on the ductile fracture of heat-treatable aluminum alloys[J]. Acta Materialia, 2005, 53: 3459-3468.
[43]刘刚, 张鹏, 杨冲, 等. 铝合金中的溶质原子团簇及其强韧化[J]. 金属学报, 2021, 57(11): 1484-1498.
Liu Gang, Zhang Peng, Yang Chong, et al. Aluminum alloys: Solute atom clusters and their strengthening[J]. Acta Metallurgica Sinica, 2021, 57(11): 1484-1498.
[44]Liu D M, Xiong B Q, Bian F G, et al. Quantitative study of nanoscale precipitates in an Al-Zn-Mg-Cu alloy aged with various typical tempers[J]. Materials Science and Engineering A, 2015, 588: 1-6.
[45]Sha G, Cerezo A. Characterization of precipitates in an aged 7××× series Al alloy[J]. Surface and Interface Analysis, 2004, 36: 564-568.
[46]Maloney S K, Hono K, Polmear I J, et al. The chemistry of precipitates in an aged Al-2.1Zn-1.7Mg at.% alloy[J]. Scripta Materialia, 1999, 41: 1031-1038.
[47]李超, 张新明, 刘文军, 等. 锌镁比对7085铝合金时效组织演变的影响[J]. 热加工工艺, 2013, 42(4): 215-222.
Li Chao, Zhang Xinming, Liu Wenjun, et al. Effect of Zn/Mg ratio on microstructure evolution of aluminum alloy 7085 during aging[J]. Hot Working Technology, 2013, 42(4): 215-222.
[48]Fang X, Song M, Kai L, et al. Effects of Cu and Al on the crystal structure and composition of η(MgZn₂) phase in over-aged Al-Zn-Mg-Cu alloys[J]. Journal of Materials Science, 2012, 47: 5419-5427.
[49]夏涵羿. 非等温时效热处理对7050铝合金性能的影响研究[D]. 南昌: 南昌大学, 2023.
[50]付多辉. 7055铝合金非等温时效析出行为及其对性能的影响[D]. 合肥: 合肥工业大学, 2022.
[51]唐鹏, 黄嘉良, 刘倩男, 等. 时效时间对7075-T6铝合金组织与性能的影响[J]. 金属热处理, 2023, 48(7): 131-137.
Tang Peng, Huang Jialiang, Liu Qiannan, et al. Effect of aging time on microstructure and properties of 7075-T6 aluminum alloy[J]. Heat Treatment of Metals, 2023, 48(7): 131-137.
[52]肖璐, 蒲博闻, 宋跃文, 等. ZL702A铝合金双硬度峰值时效行为与微观组织分析[J/OL]. 热加工工艺. https: //doi. org/10. 14158/j. cnki. 1001-3814. 20223438.
Xiao Lu, Pu Bowen, Song Yuewen, et al. Analysis of double-hardness-peak aging behaviors and microstructure of ZL702A aluminum alloy[J/OL]. Hot Working Technology. https: //doi. org/10.14158/j.cnki.1001-3814. 20223438.
[53]Sadeghi-Nezhad D, MousaviAnijdan S H, Lee H, et al. The effect of cold rolling, double aging and overaging processes on the tensile property and precipitation of AA2024 alloy[J]. Journal of Materials Research and Technology, 2020, 9(6): 15475-15485.
[54]Ren J, Wang R C, Peng C Q, et al. Multistage aging treatment influenced precipitate characteristics improve mechanical and corrosion properties in powder hot-extruded 7055 Al alloy[J]. Materials Characterization, 2020, 170: 110683.
[55]宋仁国. 高强度铝合金的研究现状及发展趋势[J]. 材料导报, 2000(1): 20-34.
Song Renguo. Current status and trends in high strength aluminum alloy research[J]. Materials Review, 2000(1): 20-34.
[56]Wang Y C, Cao L F, Wu X D, et al. Effect of retrogression treatments on microstructure, hardness and corrosion behaviors of aluminum alloy 7085[J]. Journal of Alloys and Compounds, 2020, 814: 1-10.
[57]Huo W T, Hu J J, Cao H H, et al. Simultaneously enhanced mechanical strength and inter-granular corrosion resistance in high strength 7075 Al alloy[J]. Journal of Alloys and Compounds, 2019, 781: 680-688.
[58]Sun X Y, Zhang B, Lin H Q, et al. Correlations between stress corrosion cracking susceptibility and grain boundary microstructures for an Al-Zn-Mg alloy[J]. Corrosion Science, 2013, 77: 103-112.
[59]Liu L L, Pan Q L, Wang X D, et al. The effects of aging treatments on mechanical property and corrosion behavior of spray formed 7055 aluminium alloy[J]. Journal of Alloys and Compounds, 2018, 735: 261-276.
[60]任硕, 陈江华, 刘吉梓, 等. 7150铝合金时效时晶界析出行为的研究[J]. 电子显微学报, 2011, 30(4): 444-450.
Ren Shuo, Chen Jianghua, Liu Jizi, et al. Study on the precipitation behaviors at grain boundaries in 7150 aluminum alloys upon thermal aging[J]. Journal of Chinese Electron Microscopy Society, 2011, 30(4): 444-450.
[61]Liu S D, Chen B, Li C B, et al. Mechanism of low exfoliation corrosion resistance due to slow quenching in high strength aluminium alloy[J]. Corrosion Science, 2015, 91: 203-212.