| 36 | 0 | 14 |
| 下载次数 | 被引频次 | 阅读次数 |
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。
Abstract：Effect of different aging treatments on mechanical properties and intergranular corrosion resistance of 7A41 aluminum alloy was studied using optical microscope, Vickers hardness tester, electronic universal testing machine, and intergranular corrosion test. The results show that after retrogression and re-ageing(RRA) treatment at 120 ℃×24 h+180 ℃×20 min+120 ℃×24 h, small and dispersed GP regions and η′ phases are precipitated in the 7A41 aluminum alloy, with tensile strength, yield strength, and elongation of 457.2 MPa, 433.0 MPa, and 11.0%, respectively. Compared with natural aging, peak aging, and two-stage aging, the comprehensive mechanical properties of the 7A41 aluminum alloy after RRA treatment are better, and the intergranular corrosion resistance is the best.
[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.
基本信息:
DOI：10.13289/j.issn.1009-6264.2024-0416
中图分类号:TG146.21;TG156.92
引用信息:
[1]陈杰,杨舜明,陈嘉林.时效处理对7A41铝合金力学性能和耐晶间腐蚀性能的影响[J].材料热处理学报,2025,46(08):56-62.DOI:10.13289/j.issn.1009-6264.2024-0416.
基金信息: