陈杰,杨舜明,陈嘉林

• 1:广亚铝业有限公司

摘要(Abstract)：

采用光学显微镜、维氏硬度计、电子万能试验机和晶间腐蚀试验等研究了不同工艺时效处理对7A41铝合金力学性能和耐晶间腐蚀性能的影响。结果表明：经120℃×24 h+180℃×20 min+120℃×24 h的回归再时效(RRA)处理后，7A41铝合金中析出了细小、弥散的GP区以及η′相，其抗拉强度、屈服强度和伸长率分别为457.2 MPa、433.0 MPa和11.0%;与自然时效、峰值时效和双级时效相比，经RRA处理后7A41铝合金的综合力学性能较好，耐晶间腐蚀性能最优。

关键词(KeyWords)： 7A41铝合金;时效处理;力学性能;耐晶间腐蚀性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 陈杰,杨舜明,陈嘉林

DOI: 10.13289/j.issn.1009-6264.2024-0416

参考文献(References)：

• [1] 李茂华，孙佳林，陈志龙，等.7055铝合金中纳米析出相的演变行为[J].材料热处理学报，2024,45(11):48-55.LI Mao-hua,SUN Jia-lin,CHEN Zhi-long,et al.Evolution behavior of nanoscale precipitates of 7055 aluminum alloy[J].Transactions of Materials and Heat Treatment,2024,45(11):48-55.
• [2] 秦富军.Al-Mg-Si-Cu系铝合金晶间腐蚀研究进展[J].铝加工，2019(5):12-16.QIN Fu-jun.Research progress on intergranular corrosion of Al-Mg-Si-Cu aluminum alloys[J].Aluminium Fabrication,2019(5):12-16.
• [3] 康元，张文静，程全士，等.时效工艺对7A75铝合金组织与性能的影响[J].材料热处理学报，2023,44(6):62-71.KANG Yuan,ZHANG Wen-jing,CHENG Quan-shi,et al.Effect of aging process on microstructure and properties of 7A75 aluminum alloy[J].Transactions of Materials and Heat Treatment,2023,44(6):62-71.
• [4] 余聪，陈乐平，周全.回归再时效对7075-T8铝合金显微组织及力学性能的影响[J].材料热处理学报，2022,43(8):54-61.YU Cong,CHEN Le-ping,ZHOU Quan.Effect of retrogression and re-aging treatment on microstructure and mechanical properties of 7075-T8 aluminum alloy[J].Transactions of Materials and Heat Treatment,2022,43(8):54-61.
• [5] 刘德华，朱良，邵博.时效工艺对7075铝合金力学性能的影响[J].铸造技术，2017,38(9):2137-2140.LIU De-hua,ZHU Liang,SHAO Bo.The effect of aging process on the mechanical properties of 7075 aluminum alloy[J].Foundry Technology,2017,38(9):2137-2140.
• [6] 陈愿情，张江斌，何克准，等.时效制度对7005铝合金板材组织和性能的影响[J].轻合金加工技术，2019,47(11):38-42.CHEN Yuan-qing,ZHANG Jiang-bin,HE Ke-zhun,et al.Effect of aging system on structure and properties of 7005 aluminum alloy sheet[J].Light Alloy Fabrication Technology,2019,47(11):38-42..
• [7] Rao A C U,Vasu V,Govindaraju M,et al.Stress corrosion cracking behaviour of 7xxx aluminum alloys:A literature review[J].Transactions of Nonferrous Metals Society of China,2016,26(6):1447-1471.
• [8] 池海涛，刘馥兵，胡晓光.7A41铝合金的力学性能和耐蚀性能[J].金属热处理，2022,47(8):88-94.CHI Hai-tao,LIU Fu-bing,HU Xiao-guang.Mechanical properties and corrosion resistance of 7A41 aluminium alloy[J].Heat Treatment of Metals,2022,47(8):88-94.
• [9] 赵兴明，邓厚阳.不同时效处理对7075高强度铝合金组织性能的影响[J].热加工工艺，2017,46(14):216-219.ZHAO Xing-ming,DENG Hou-yang.Effects of different aging treatment on microstructure and properties of 7075 high strength aluminum alloy[J].Hot Working Technology,2017,46(14):216-219.
• [10] Wen K,Fan Y Q,Wang G J,et al.Aging behavior and precipitate characterization of a high Zn-containing Al-Zn-Mg-Cu alloy with various tempers[J].Materials and Design,2016,101(5):16-23.
• [11] Xiao Y,Pan Q,Li W,et al.Influence of retrogression and re-aging treatment on corrosion behaviour of an Al-Zn-Mg-Cu alloy[J].Materials and Design,2011,32(4):2149-2156.
• [12] 毛晓东，李英东，陈振宁，等.时效时间对AA6014铝合金板材力学性能及晶间腐蚀性能的影响[J].材料热处理学报，2023,44(5):59-67.MAO Xiao-dong,LI Ying-dong,CHEN Zhen-ning,et al.Effect of aging time on mechanical properties and intergranular corrosion resistance of AA6014 aluminum alloy sheet[J].Transactions of Materials and Heat Treatment,2023,44(5):59-67.
• [13] 张婷.7N01铝合金的时效工艺及抗腐蚀性能研究[D].南宁：广西大学，2016.ZHANG Ting.Study on the aging process and corrosion resistance rroperties of 7N01 aluminum alloy[D].Nanning:Guangxi University,2016.
• [14] Zaid H R,Hatab A M,Ibrahim A M A.Properties enhancement of Al-Zn-Mg alloy by retrogression and re-aging heat treatment[J].Journal of Mining & Metallurgy,2011,47(1):31-35.
• [15] Nefawy M Y A,Dahiye F E.Effect of retrogression and re-aging heat treatment on hardness,tensile strength and microstructure of 7075 aluminum alloy[J].Association of Arab Universities Journal of Engineering Sciences,2021,28(2):63-68.
• [16] 于美，刘建华，李松梅.航空铝合金腐蚀防护与检测方法[M].北京：科学出版社，2017.YU Mei,LIU Jian-hua,LI Song-mei.Corrosion Protection and Detection Methods for Aviation Aluminum Alloys[M].Beijing:Science Press,2017.
• [17] 韩念梅，张新明，刘胜胆，等.双级时效对7050铝合金厚板断裂韧性的影响[J].中南大学学报(自然科学版),2011,42(3):623-628.HAN Nian-mei,ZHANG Xin-ming,LIU Sheng-dan,et al.Influence of two-step aging on fracture toughness of 7050 aluminum alloy plate[J].Journal of Central South University (Science and Technology),2011,42(3):623-628.
• [18] 匡秀琴，李瑞雷，季清清，等.不同热处理对Al-7.95Zn-1.84Mg-0.65Cu合金力学性能和耐腐蚀性能的影响[J].西北工业大学学报，2020,38(3):596-603.KUANG Xiu-qin,LI Rui-lei,JI Qing-qing,et al.The influence of different heat treatments on the mechanical properties and corrosion resistance of Al-7.95Zn-1.84Mg-0.65Cu alloy[J].Journal of Northwestern Polytechnical University,2020,38(3):596-603.
• [19] 徐宁，王爽，冯小东，等.时效制度对Al-Zn-Mg-Cu合金性能的影响[J].铝加工，2018(5):58-61.XU Ning,WANG Shuang,FENG Xiao-dong,et al.Influence of aging systems on property of Al-Zn-Mg-Cu alloy[J].Aluminium Fabrication,2018(5):58-61.
• [20] 姚晓红，张林，高文理，等.时效状态对7A85高强铝合金力学性能和晶间腐蚀性能的影响[J].稀有金属材料与工程，2013,42(12):2581-2585.YAO Xiao-hong,ZHANG Lin,GAO Wen-li,et al.Effect of aging treatment on mechanical and intergranular corrosion properties of 7A85 high strength aluminum alloy[J].Rare Metal Materials and Engineering,2013,42(12):2581-2585.
• [21] Li J,Li F,Ma X,et al.Effect of grain boundary characteristic on intergranular corrosion and mechanical properties of severely sheared Al-Zn-Mg-Cu alloy[J].Materials Science and Engineering A,2018,732(8):53-62.
• [22] Ozer G,Karaaslan A.Relationship of RRA heat treatment with exfoliation corrosion,electrical conductivity and microstructure of AA7075 alloy[J].Materials and Corrosion,2017,68(11):1260-1267.
• [23] Xia P,Liu Z,Bai S,et al.Enhanced fatigue crack propagation resistance in a superhigh strength Al-Zn-Mg-Cu alloy by modifying RRA treatment[J].Materials Characterization,2016,118(7):438-445.
• [24] 沈茹娟，肖代红.时效热处理对7B50超强铝合金组织与性能的影响[J].粉末冶金材料科学与工程，2016,21(1):78-84.SHEN Ru-juan,XIAO Dai-hong.Effect of aging heat treatment on microstructure and properties of 7B50 super-strong aluminum alloy[J].Materials Science and Engineering of Powder Metallurgy,2016,21(1):78-84.
• [25] 滕天娇，谭子昊，杨林，等.回归再时效处理对Al-6Zn-2Mg-2Cu合金力学性能及耐蚀性的影响[J].材料热处理学报，2018,39(1):14-19.TENG Tian-jiao,TAN Zi-hao,YANG Lin,et al.Effect of retrogression and re-aging treatment on mechanical properties and corrosion resistance of Al-6Zn-2Mg-2Cu alloy[J].Transactions of Materials and Heat Treatment,2018,39(1):14-19.
• [26] 杨荣先，刘志义，陈来，等.回归再时效对超高强铝合金力学性能及组织的影响[J].粉末冶金材料科学与工程，2016,21(2):264-269.YANG Rong-xian,LIU Zhi-yi,CHEN Lai,et al.Effect of retrogression and reaging on mechanical properties and microstructure of ultra high strength aluminum alloy[J].Materials Science and Engineering of Powder Metallurgy,2016,21(2):264-269.

文章评论(Comment)：