Transactions of Materials and Heat Treatment

Title：Several extrusion technologies for severe plastic deformation

Authors： Wang Qiang Yu Jianmin Xue Yong Zhang Zhimin

Unit： North University of China

KeyWords： extrusion severe plastic deformation expanding-reducing extrusion repetitive extrusion-upsetting rotating backward extrusion

ClassificationCode：TG376.2

year,vol(issue):pagenumber：2022,47(10):12-17

Abstract：

To realize the preparation of large-scale bulk materials or the forming of high performance components, the extrusion forming technology for severe plastic deformation (SPD) were developed in recent years, and the three new extrusion technologies, including expanding-reducing extrusion(ERE), repetitive extrusion-upsetting(REU) and rotating backward extrusion (RBE) were summarized in recent years. Then, the basic principle, technological process and deformation characteristics were described, the applications of the three new extrusion technologies in aluminum and magnesium alloy materials or typical products were introduced, and the problems that need to be solved were put forward. The research results and the applied practice show that the REU technology can realize the preparation of large size and high quality deformed billets, the ERE technology are used to form large thin-walled cylindrical parts with center hole at the bottom, and the RBE technology can realize short process forming of cup components with high performance.

Funds：

国家自然科学基金资助项目（51775520）

王强（1973-），男，博士，教授，E-mail：wangqiang@nuc.edu.cn

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