Transactions of Materials and Heat Treatment

Title：Springback prediction of forming free-form surface parts for high-strength 6451 aluminum alloy

Authors： Liang Weikang1 2 3 Wang Yichuan1 Yuan Rong1 Wang Qianting4 Zhou Ce2 Deng Jianghua3 Ran Jilong5 Liu Zhenshan6

Unit： (1. College of Materials Science and Engineering Fujian University of Technology Fuzhou 350118 China 2. Fujian Nanping Aluminium Co. Ltd. Nanping 353000 China 3. School of Mechanical Engineering and Automation Fuzhou University Fuzhou 350108 China 4.School of Materials Science and Engineering Xiamen University of Technology Xiamen 361024 China 5.Chinalco Ruimin Co. Ltd. Fuzhou 350015 China 6.Chinalco Materials Application Research Institute Co. Ltd. Beijing 102209 China)

KeyWords： high-strength 6451 aluminum alloy yield criteria hardening model free-form surface parts springback

ClassificationCode：TG386

year,vol(issue):pagenumber：2025,50(4):25-36

Abstract：

Aiming at the problem of springback in the stamping process of high-strength 6451 aluminum alloy for automoblie interior panels， for free-form surface parts， VUMAT subroutine was developed by yield criterion Yld2000-2d and Voce-Swift mixed hardening model to simulate and analysis the stamping process of free-form surface parts for 6451 aluminum alloy， and the influence laws of stamping speed，holding time and number of cycles on the springback of free-form surface parts were investigated by software ABAQUS. The results indicate that increasing the stamping speed， holding time and number of cycles can reduces the springback amount of free-form surface parts， and the stamping speed has the greatest impact， followed by the holding time， and the number of cycles has the least impact. The error between the simulated value and experimental value for the springback amount of free-form surface parts is 3.13% to 11.31%， which indicates that the developed VUMAT subroutine can better predict the springback law of free-form surface parts.

Funds：

基金项目:福建省科技计划区域发展项目 (2023H4021)；福建省科技计划对外合作产业化项目(2022I1011)；福州市科技计划科技重大项目（2021-ZD-214）；宁德市产学研合作项目（2021C004）；福建省科技计划高校产学合作项目（2023H6035,2023H6036）

作者简介：梁卫抗（1985-），男，博士，副教授

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