Transactions of Materials and Heat Treatment

Title：Influence of die forging method on forging forming for aluminum alloy shaft fork

Authors： Li Bing1 Deng Yunfei1 Zhang Peng1 Wang Min1 Zhao Fangjun2

Unit： 1.School of Materials Science and Engineering Hubei University of Automotive Industry 2.Hubei Ertai Technology Industry Co. Ltd.

KeyWords： 6061 aluminum alloy die forging method metallographic structure shaft fork mechanical performance

ClassificationCode：TG316.3

year,vol(issue):pagenumber：2023,48(7):29-34

Abstract：

The influences of die forging methods of one-step forming and two-step forming on the forging of 6061 aluminum alloy shaft forks were analyzed by simulation and experiment. The simulation results show that the equivalent strain and equivalent stress values near the blind hole of fork ear for forgings in the two-step forming are smaller than that in the one-step forming. The experiment results show that the forgings obtained by one-step forming and two-step forming both show that the mechanical properties of shaft fork rod are the best, with the tensile strength of 362 MPa, the yield strength of 329 MPa and the elongation of 15.2%. The tensile strength, yield strength and elongation of the forgings by two-step forming near the blind hole of fork ear are larger than that by the one-step forming, and the mechanical properties of other parts are not significantly different. The two-step forming forgings have smaller grain size near the blind hole of fork ear, and the distribution of precipitated phase is uniform. However, the one-step forming forgings have larger grain size at this location, uneven distribution of precipitated phases which have coarse grains. Thus, by comprehensive comparison, the two-step forming method of die forging is better than the one-step forming method.

Funds：

国家自然科学基金资助项目（51205116）；湖北省重点研发计划项目（2021BAB019）

作者简介：李兵（1981-），男，硕士，副教授 E-mail：libing42158823@163.com

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