Study on Correlation Between Metal Flow and Microstructure of Deep Drawing Test of 6A16 Aluminum Alloy for Automobile Body Panel
LIU Zhaoyang1,2,3, XIONG Baiqing1,3, ZHANG Yong’an1,2,3, LI Zhihui1,3, LI Xiwu1,2,3, YAN Lizhen1,2,3, WEN Kai1,2,3
1 State Key Laboratory of Nonferrous Metals and Processes, GRINM Group Co., LTD., Beijing 101407, China; 2 GRIMAT Engineering Institute Co., LTD., Beijing 101407, China; 3 General Research Institute for Nonferrous Metals, Beijing 100088, China
Abstract: Due to the increasingly severe energy and environmental problems, the research and development of lightweight vehicles has become a hot topic, and the application of 6000 series aluminum alloys on automobile body panels has received extensive attention. The process of metal flow and microstructure evolution of 6A16 aluminum alloy plate during drawing forming was investigated by simulated and tested, after presaging and storage at room temperature for one month based ABAQUS/Explicit finite element method. The results show that in the process of deep drawing test, the top part become thicker and crease easily. Meanwhile, the integral hardness and thickness of the cup-typed component increases with the increase of the height of the wall. The rounded corners become thinner and crack easily. The grain orientation of 6A16 aluminum alloy is mainly based on Cube orientation, and the ear is produced at four positions in the rolling direction and the vertical rolling direction. As the deep drawing progresses, the Cube oriented grains gradually disappear. In the scope of this experimental study, as the height of the wall decreases, the grain size becomes smaller, the proportion of the large-angle grain boundary increases, and the Mg2Si and Si-rich phases become larger and thicker particularly in rounded corners area.
刘钊扬, 熊柏青, 张永安, 李志辉, 李锡武, 闫丽珍, 温凯. 汽车车身板用6A16铝合金拉深成形金属流动和微观组织相关性研究[J]. 材料导报, 2020, 34(8): 8119-8125.
LIU Zhaoyang, XIONG Baiqing, ZHANG Yong’an, LI Zhihui, LI Xiwu, YAN Lizhen, WEN Kai. Study on Correlation Between Metal Flow and Microstructure of Deep Drawing Test of 6A16 Aluminum Alloy for Automobile Body Panel. Materials Reports, 2020, 34(8): 8119-8125.
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2020, Vol. 34 
