Transactions of Materials and Heat Treatment

Title：Research progress on high efficiency hot stamping process for high strength aluminum alloy

Authors：

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ClassificationCode：TG319；TG146.2

year,vol(issue):pagenumber：2020,45(7):1-12

Abstract：

Hot stamping technology solves the problems of forming difficulties and large springback for high strength aluminum alloy, but it is difficult to industrialize due to the long solution time and aging time as well as the mismatch with the forming rhythm. Therefore, the research progress on high efficiency hot stamping process of high strength aluminum alloy was introduced and discussed from fast solution, parked effect and short-time aging, and the high efficiency hot stamping process and process control were proposed. The results show that the solution chooses higher temperature and uses strong convection heating or contact heating, which is completed within five minutes, and the anging of high strength aluminum alloy for 6000 series is carried out immediately after quenching. Furthermore, multi-stage aging with a shorter time pre-aging process is used in aging process, and existing pre-aging is done in 1 h. Finally, the short-time aging process is prospected, and it is believed that the aging time is further reduced by adding alloy elements. Thus, on this basis, the stress corrosion resistance and fatigue performance were studied.

Funds：

国家自然科学基金资助项目(U1760205);国家科技重大专项(2018ZX04023001)

刘勇(1989-),男,博士,助理研究员 E-mail：liuyongmpe@hust.edu.cn 通讯作者：张宜生(1951-),男,硕士,教授 E-mail：zhangys@mail.hust.edu.cn

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