Microstructure and mechanical properties of AM60B magnesium alloy prepared by cyclic extrusion compression

作     者：王丽萍 陈添 姜文勇 冯义成 曹国剑 朱岩 Li-ping WANG;Tian CHEN;Wen-yong JIANG;Yi-cheng FENG;Guo-jian CAO;Yan ZHU

作者机构：哈尔滨理工大学材料科学与工程学院哈尔滨150040 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2013年第23卷第11期

页      面：3200-3205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(ZD20081901,QC2010110,QC2012C006)supported by the Natural Science Foundation of Heilongjiang Province,China Project(2012RFQXS113)supported by Special Fund Project for Scientific and Technological Innovation Talents of Harbin,China Project(201210214008)supported by Training Programs of Innovation and Entrepreneurship for Undergraduates,China 

主　　题：magnesium alloy cyclic extrusion compression microstructure mechanical properties 

摘      要：The cyclic extrusion compression （CEC） process was introduced into the AM60B magnesium alloy. The use of the CEC process was favorable for producing finer microstructures. The results show that the microstructure can be effectively refined with increasing the number of CEC passes. Once a critical minimum grain size was achieved, subsequent passes did not have any noticeable refining effect. As expected, the fine-grained alloy has excellent mechanical properties. The micro-hardness, yield strength, ultimate tensile strength and elongation to failure of two-pass CEC formed alloy are 72.2, 183.7 MPa, 286.3 MPa and 14.0%, but those of as-cast alloy are 62.3, 64 MPa, 201 MPa and 11%, respectively. However, there is not a clear improvement of mechanical properties with further increase in number of CEC passes in AM60B alloy. The micro-hardness, yield strength, ultimate tensile strength and elongation to failure of four-pass CEC formed alloy are 73.5, 196 MPa, 297 MPa and 16%, respectively.