Transactions of Materials and Heat Treatment

Title：Numerical simulation and experiment research on multi-directional free forging of Al-Zn-Mg-Cu high strength aluminum alloy

Authors： ZHANG Yun-fei WANG Liang ZHAO Xiao-dong CHEN Hui-qin

Unit： Taiyuan University of Science and Technology Beijing Institute of Aeronautical Material

KeyWords： thick plates of high strength aluminum alloys multi-directional free forging process plastic deformation heat treatment

ClassificationCode：TG316

year,vol(issue):pagenumber：2013,38(4):167-171

Abstract：

Multi-directional free forging process of high strength aluminum alloy thick plates and its microstructure and mechanical properties were investigated by numerical simulation and experiments. The process is of three-times upsetting, two-times drawing and forming operations and four-times upsetting, three-times drawing and forming operations. The numerical simulation and experiment results show that when the forging ratio of four-times upsetting and three-times drawing is 4.52 greater than that in three-times upsetting and two-times drawing, the values of equivalent strains is 3.8-4.0 bigger; second phases are smaller and more dispersion; grains are smaller and more uniform; mechanical properties are higher and nearly the same in the three directions.

Funds：

山西省回国留学人员科研项目（2011-074）；山西省科技攻关项目（20110321013-02）

张云飞(1984-)，男，硕士研究生

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