Effect of Cold Rolling Deformation on Microstructure and Mechanical Properties of Al-Cu-Mg Alloy
WANG Shuai1, GUO Erjun1, FENG Yicheng1,FU Jinlai2, MA Baoxia1, ZHAO Sicong1, WANG Lei1
1 School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China 2 Northeast Light Alloy Co., Ltd., Harbin 150060, China
Abstract: The effects of cold deformation on the microstructure and properties of hot rolled Al-Cu-Mg alloy were studied by optical microscopy, scanning electron microscopy, EBSD technology, transmission electron microscopy and a universal tensile testing machine. The microstructure observation results show that with increasing cold rolling deformation, the undissolved Al2CuMg [Fe,Mn] phase and Al2Cu [Fe,Mn] phase in the alloy are broken. There are many rod-like Al20Cu2Mn3 phases in the matrix, and there are a large number of entanglement dislocations near the T phase, which have an obvious strengthening effect on the alloy. When the cold rolling deformation is 19%, the dislocation density reaches the maximum. At the same time, with the increase in cold rolling deformation, the texture content of S, R, Cube, Goss and Brass increases, and the texture content of 〈111〉〈110〉 decreases. The results of the mechanical property tests show that with increasing cold rolling deformation, the strength of the alloy increases, and the elongation remains at a high level. When the cold rolling deformation is 11%, the comprehensive mechanical properties of the alloy in the rolling direction are the best, with a tensile strength of 465.0 MPa, yield strength of 291.6 MPa and elongation of 19.0%. At this time, the transverse tensile strength of the alloy is 469.9 MPa, the yield strength is 318.0 MPa, and the elongation is 16.9%.
1 Huang G, Li Z H, Sun L M, et al. Rare Metals, 2020, 40(9),2523. 2 Du S, Zhang Y A, Yan L Z, et al. Rare Metals, 2020, 40(10),2937. 3 Chen Y, Liu Z, Bai S, et al.Journal of Materials Engineering and Performance, 2019, 28(6), 3590. 4 Zuiko I, Kaibyshev R. Materials Science and Engineering: A, 2017, 702,53. 5 Tong D L, Yi Y P, Huang S Q, et al.Materials Reports, 2020, 34(6),6100(in Chinese). 童灯亮, 易幼平, 黄始全, 等. 材料导报, 2020, 34(6), 6100. 6 Zhu Z Y, Tu H, Wu C J, et al.Materials Reports, 2021, 35(4),4129(in Chinese). 朱振宇, 涂浩, 吴长军, 等. 材料导报, 2021, 35(4),4129. 7 Zlaticanin B, Duric S, Jordovic B, et al. Materials Science and Technology, 2013, 20(1), 138. 8 Zhou Q, Wang J,Misra A, et al. International Journal of Plasticity, 2016, 87, 100. 9 Staszczyk A, Sawicki J, Adamczyk-Cieslak B. Materials (Basel), 2019, 12(24),4168. 10 Wang H, Yi Y, Huang S.Journal of Alloys and Compounds, 2016, 685,941. 11 Doppalapudi D, Venkatachalam P, Ramesh Kumar S, et al. Transactions of the Indian Institute of Metals, 2010, 63(1), 31. 12 Chen Z, Ren J, Yuan Z, et al.Materials Science and Engineering: A, 2020, 787, 139447. 13 Shi W N, Zhou H F, Zhang X F.Materials Science Forum, 2020, 990,3. 14 Wang S C,Starink M J. Acta Materialia, 2007, 55(3),933. 15 Zhang X, Hashimoto T, Lindsay J, et al.Corrosion Science, 2016, 108,85. 16 Wang K M.Light Metals, 1994(7),46 (in Chinese). 王奎民. 轻金属, 1994(7), 46. 17 Wang K M, Zhang Y Z.Light Alloy Fabrication Technology, 1996(10), 32(in Chinese). 王奎民,张玉洁. 轻合金加工技术, 1996(10),32. 18 Ning A L, Liu Z Y, Zeng S M. Transactions of Nonferrous Metals Society of China, 2006, 16(6), 1341. 19 Ning A L, Liu Z Y, Zeng S M, et al. Materials Reports, 2007(3),74 (in Chinese). 宁爱林, 刘志义, 曾苏民, 等. 材料导报, 2007(3),74. 20 Li C M, Zeng S M, Chen Z Q, et al.Computational Materials Science, 2014, 93,210. 21 Ma G F, Lu Z Y, He C L.Journal of Shenyang University(Natural Science), 2017, 29(6), 435(in Chinese). 马国峰, 鲁志颖, 贺春林. 沈阳大学学报(自然科学版), 2017, 29(6), 435. 22 Engler O, Hirsch J. Materials Science and Engineering: A, 2002, 336(1-2),249. 23 Zhou D Y. Texture, Microindentation and corrosion behavior of cold rolled AA6061 aluminum alloy. Ph. D. Thesis, Taiyuan University of Technology, China, 2018 (in Chinese). 周琱玉. 冷轧AA6061铝合金的织构、微米压痕与腐蚀性能研究. 博士学位论文,太原理工大学, 2018.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2023, Vol. 37 
