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

doi:10.11896/cldb.19090225

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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.

Key words： ABAQUS 6A16 aluminum alloy deep drawing metal flow microstructure

Published: 25 April 2020

CLC number:

TG386.1

Fund:This work was financially supported by the National Key Research and Development Program of China (2016YFB0300805).

About author:: Zhaoyang Liu, is a Ph.D. student at Beijing Nonferrous Research Institute. He graduated from Central South University with a bachelor's degree in 2011 and a master’s degree from Central South University in 2014. In 2014, he studied for a doctoral degree at the Beijing Research Institute of Nonferrous Metals. He is committed to researching new aluminum alloy materials for the manufacture of automotive panels and frame parts, and published two SCI articles as the first author.
Baiqing Xiong, professor-level senior engineer, doctoral tutor. He graduated from the Department of Materials Physics of Beijing University of Science and Technology in 1995 with a doctorate in engineering. He is currently the deputy secretary and director of the Party Committee of Yanken Technology Group Co., Ltd. and nominated as the general manager of Youyan Technology Group Co., Ltd. He has long been engaged in the theory and technology of strengthening and toughening of non-ferrous metal structural materials, high-strength and high-tough aluminum alloy materials for aerospace, new aluminum alloy materials for automobile cover and frame parts manufacturing, rapid solidification alloy materials and preparation technology research, and was chaired by the person in charge. 17 items (including the national 973 major basic research plan "Advanced Metal Material Forming Organizational Control Technology Foundation" project (No. 2012CB723900), as a backbone participated in more than 40 national-level scientific and technological projects in this professional field. He has published more than 240 academic papers in core journals at home and abroad, and has been included in more than 160 articles by SCI and EI; 37 international invention patents and national invention patents have been authorized; 1 editorial publication of scientific works and 1 monograph of cooperative publishing technology.

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Cite this article:

LIU Zhaoyang,XIONG Baiqing,ZHANG Yong’an, et al. Study on Correlation Between Metal Flow and Microstructure of Deep Drawing Test of 6A16 Aluminum Alloy for Automobile Body Panel[J]. Materials Reports, 2020, 34(8): 8119-8125.

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http://www.mater-rep.com/EN/10.11896/cldb.19090225 OR http://www.mater-rep.com/EN/Y2020/V34/I8/8119

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