Transactions of Materials and Heat Treatment

Title：Analysis on upsetting process for aluminum alloy 6061 based on mechanism of crystal defects

Authors： Miao Jun Gong Hongying Zhang Jie Lyu Hongyi Liao Zehuan Xu Zhimin

Unit： Shanghai University of Engineering Science Shanghai East Cold Forging Co. Ltd.

KeyWords： crystal defects finite element simulation aluminum alloy 6061 hot and cold upsetting plastic deformation

ClassificationCode：TG301

year,vol(issue):pagenumber：2017,42(8):173-179

Abstract：

Based on the mechanism of crystal defect, the simulation experiment of cold and hot upsetting for aluminum alloy 6061 was conducted by the finite element software. Under the condition that the movement speed of tool and the average deformation rate of material remained unchanged, aluminum alloy 6061 was subjected to free upsetting at room temperature of 20 ℃ and the heating temperature of 350 ℃. And the height and diameter of the forging part can meet the requirement in the hot deformation process, however it can not reach the specifications in the cold deformation. The analysis of the test results show that the mechanism of crystal defects has many effects on the plastic deformation of metal, and the method of the hot upsetting process is more suitable for the aluminum alloy die forging, because hot forming is beneficial to reduce the movement barrier of the crystal defects in the metal.

Funds：

上海工程技术大学研究生创新项目(17KY0501)

缪军(1989-)，男，硕士研究生龚红英（1974-），女，博士，教授

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