Influence of AZ31 sheet treated by cryogenic on punch shearing

作     者：HU Zhi-qing GUO Chao-fan LI Hong-mei 胡志清;郭超凡;李洪梅

作者机构：Rolling Forging Research InstituteJilin UniversityChangchun 130025China Key Laboratory of Automobile Materials (Ministry of Education)Jilin UniversityChangchun 130025China College of Materials Science and EngineeringJilin UniversityChangchun 130025China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2019年第26卷第6期

页      面：1582-1591页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Projects(51275201,51311130129)supported by the National Natural Science of China Project(20140204062GX)supported by the Jilin Key Scientific and Technological Project,China 

主　　题：AZ31 magnesium alloy cryogenic treatment mechanical properties punch shearing 

摘      要：Punch shearing is used to form the part in the material *** treatment(CT)has active effect on local mechanical properties of steel,but it is still uncertain of the influence of CT on the properties of the magnesium alloy during punch *** this work,the influence of AZ31 sheet treated by cryogenic on punch shearing was *** were observed with a ZEISS optical microscope,and mechanical properties,as well as shear properties were tested by tensile testing and punch *** results show that the number of secondary phase increases and a large number of twins appear in the grains after ***,the ultimate tensile strength(UTS),the ductility,and hardness of AZ31 are improved,while the yield strength(YS)decreases gradually during *** punch shearing,the shearing strength decreases,the rollover radius changes insignificantly,and the height of the burr on the edge of the cross section *** the same time,a larger proportion of smooth zone on the cross section has been achieved.