往复挤压AM60B镁合金的组织与力学性能

往复挤压AM60B镁合金的组织与力学性能

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Bibliographic Details
Published in:中国有色金属学报：英文版 no. 11; pp. 3200 - 3205
Main Author: 王丽萍 陈添 姜文勇 冯义成 曹国剑 朱岩
Format: Journal Article
Language:English
Published: 2013
Subjects:
力学性能
往复挤压
组织
镁合金
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Description
Bibliography:43-1239/TG
magnesium alloy; cyclic extrusion compression; microstructure; mechanical properties
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.
Li-ping WANG, Tian CHEN, Wen-yong JIANG, Yi-cheng FENG, Guo-jian CAO, Yan ZHU College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China
ISSN:1003-6326