Anisotropy of Dynamic Mechanical Behavior of 2024-T351 Aluminum Alloy for Automobile
ZUO Zhidong1, LIU Xianbin2, LIU Jibo2, WANG Xiaofeng1,3,*, CHEN Jianbin1
1 Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, Zhejiang, China 2 Ningbo Zhanci New Material Co., Ltd., Ningbo 315338, Zhejiang, China 3 Key Laboratory of Impact and Safety Engineering, Ministry of Education, Ningbo University, Ningbo 315211, Zhejiang, China
Abstract: The dynamic mechanical behavior and microstructure evolution of the 2024-T351 aluminum alloy used in automobiles were investigated using a tensile testing machine, scanning electron microscope (SEM), and optical microscope (OM). The results showed that the 2024-T351 aluminum alloy exhibited significant anisotropy, and the strain rate had a certain influence on the mechanical properties and microstructure. Under the same strain rate, the stress was highest in the 0° direction and lowest in the 45° direction. In the 0° direction, the ultimate tensile strength of the alloy changed relatively little with increasing strain rate, while the yield strength, elongation, and reduction of area showed a trend of increa-sing first, then remaining constant, and finally increasing continuously. In the 45° and 90° directions, the ultimate tensile strength, yield strength, elongation, and reduction of area all showed a trend of increasing first, then remaining constant, and finally increasing continuously with increa-sing strain rate. The 90° direction had a stronger strain rate sensitivity than the other two directions. Johnson-Cook constitutive equations were fitted for the alloy in the three directions, which could well predict the dynamic mechanical behavior of the 2024-T351 aluminum alloy in various directions. All specimen fracture surfaces had variable-sized dimples, and the dimples formed at higher strain rates were larger and deeper. The grain size after fracture was basically unrelated to the direction and strain rate, but the aspect ratio of the grains was greatly influenced by the direction and strain rate.
1 Sun L, Guo Y Y, Chen L, et al. Journal of Materials Research and Technology, 2021, 12, 1126. 2 Deng Y L, Zhang X M. Chinese Journal of Nonferrous Metals, 2019, 29(9), 2115(in Chinese). 邓运来, 张新明. 中国有色金属学报, 2019, 29(9), 2115. 3 Yin H G, Zou M T, Yang B Y, et al. Journal of Chongqing University of Technology(Natural Science), 2023, 37(9), 158(in Chinese). 尹恒刚, 邹梦婷, 杨炳元, 等. 重庆理工大学学报(自然科学), 2023, 37(9), 158. 4 Khina B B, Pokrovsky A I, Zhang S H, et al. Russian Journal of Non-Ferrous Metals, 2021, 62(5), 545. 5 Cavusoglu O, Leacock A G, Gürün H, et al. Materials and Technologies, 2017, 51(2), 333. 6 Ma H J, Huang L, Tian Y, et al. Materials Science and Engineering: A, 2014, 606, 233. 7 Sun W, Jing Y, Tong W P, et al. Rare Metal Materials and Enginee-ring, 2021, 50(6), 2118(in Chinese). 孙巍, 静宇, 佟伟平, 等. 稀有金属材料与工程, 2021, 50(6), 2118. 8 Dong L Y, Li Q M, Ma L F, et al. Heat Treatment Technology and Equipment, 2020, 41(2), 14(in Chinese). 董刘颖, 李秋梅, 马龙飞, 等. 热处理技术与装备, 2020, 41(2), 14. 9 Wang X F, Shi T Y, Wang H B, et al. Transactions of Nonferrous Metals Society of China, 2020, 30(1), 27. 10 Borvik T, Hopperstad O S, Pedersen K O, et al. International Journal of Impact Engineering, 2010, 37(5), 537. 11 Hou Z X, Liu Z G, Wan M, et al. Journal of Materials Engineering and Performance, 2020, 29(6), 3745. 12 Hao Z C, Fu X L, Men X H, et al. Materials Research Express, 2019, 6(3), 036502. 13 Yan H T, Zhang W C, Zhang G X. Auto Engineer, 2018(8), 44(in Chinese). 闫海涛, 张文超, 张桂贤. 汽车工程师, 2018(8), 44. 14 Zhang Y, Wang B W, Liu X C, et al. Journal of Vibration and Shock, 2020, 39(2), 249(in Chinese). 张宇, 王彬文, 刘小川, 等. 振动与冲击, 2020, 39(2), 249. 15 Seidt J D, Gilat A. International Journal of Solids and Structures, 2013, 50(10), 1781. 16 Gao Q Q, Hu B R, Yang W. Hot Working Technology, 2014, 43(12), 113(in Chinese). 高倩倩, 胡本润, 杨伟. 热加工工艺, 2014, 43(12), 113. 17 Jia B, Rusinek A, Xiao X, et al. International Journal of Impact Engineering, 2021, 156, 103972. 18 Cheng X Y. Physical Testing and Chemical Analysis(The physical vo-lume), 2018, 54(2), 122(in Chinese). 程晓宇. 理化检验(物理分册), 2018, 54(2), 122. 19 Owolabi G, Odoh D, Peterson A, et al. World Journal of Mechanics, 2013, 3(2), 112. 20 Du H B, Yang H F, Hu Z N, et al. Transactions of Nonferrous Metals Society of China, 2019, 29(3), 439(in Chinese). 杜汉斌, 杨海峰, 胡峥楠, 等. 中国有色金属学报, 2019, 29(3), 439. 21 Liu S D, Wang S L, Ye L Y, et al. Materials Science and Engineering: A, 2016, 677, 203. 22 Hao M, Wang L, Chen J Z, et al. Chinese Journal of Rare Metals, 2021, 45(6), 641(in Chinese). 郝敏, 王亮, 陈军洲, 等. 稀有金属, 2021, 45(6), 641. 23 Xu S, Tyson W R, Bouchard R, et al. Journal of Materials Engineering & Performance, 2009, 18(8), 1091. 24 Geng G Q, Ding D Z, Duan L B, et al. Australian Journal of Mechanical Engineering, 2022, 20(2), 516. 25 Yang S S, Sun L Q, Deng H K, et al. International Journal of Material Forming, 2021, 14(4), 677. 26 Zhang Y B, Yao S, Hong X, et al. Journal of Central South University, 2017, 24(011), 2550. 27 Jia Z, Guan B, Zang Y, et al. Materials Science and Engineering: A, 2021, 820, 141565. 28 Smerd R, Winkler S, Salisbury C, et al. International Journal of Impact Engineering, 2005, 32(1-4), 541. 29 Zhang P, Chen M H, Xie L S. Rare Metal Materials and Engineering, 2020, 49(3), 819. 30 Wang X F, Shi T Y, Wang H B, et al. Transactions of Nonferrous Metals Society of China, 2020, 30(1), 27.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2024, Vol. 38 
