Microstructure and Mechanical Properties of Pure Magnesium Subjected to Hot Extrusion

被引：8
|
作者：
Lei Weiwei [1 ,2 ]
Zhu Derong [3 ]
Wang Hongxia [1 ,2 ]
Liang Wei [1 ,2 ]
机构：
[1] Taiyuan Univ Technol, Sch Mat Sci & Engn, Taiyuan 030024, Peoples R China
[2] Taiyuan Univ Technol, Shanxi Key Lab Adv Magnesium Based Mat, Taiyuan 030024, Peoples R China
[3] Luoyang Inst Sci & Technol, Sch Mech Engn, Luoyang 471023, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2019年 / 34卷 / 05期
基金：
中国国家自然科学基金;
关键词：
microstructure; pure Mg; mechanical properties; hot extrusion; CHANNEL ANGULAR EXTRUSION; ALLOYS; EVOLUTION; TEXTURE;
D O I：
10.1007/s11595-019-2177-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The as-cast pure magnesium (Mg), with a purity of 99.99%, was hot-extruded at 300 degrees C to prepare a Mg bar with a diameter of 8 mm. The microstructure and mechanical properties of the sample before and after extrusion were investigated. The results show that the as-extruded microstructure is obviously refined with a large number of subgrains rather than equiaxed grains. A great number of (102) tensile twins can be observed significantly in the microstructure at the temperature. Mechanical properties including yield strength (YS) and ultimate tensile strength (UTS) increase greatly but uniform elongation (UE) decreases slightly as a result of work hardening.
引用
收藏
页码：1193 / 1196
页数：4
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