A novel method for improving the strength and ductility of Mg-Y-Er-Zn alloy using rotary-die equal-channel angular pressing

被引：16

作者：

Wu, Haoran ^{[1
]}

Jiang, Jinghua ^{[1
]}

Liu, Huan ^{[1
]}

Huang, He ^{[1
]}

Li, Yuhua ^{[1
,2
]}

Chen, Jiaying ^{[3
]}

Ma, Aibin ^{[1
,2
]}

机构：

[1] Hohai Univ, Coll Mech & Mat, Nanjing 210000, Peoples R China

[2] Hohai Univ, Suqian Inst, Suqian 223800, Peoples R China

[3] Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210000, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2021年 / 13卷

基金：

中国国家自然科学基金;

关键词：

Magnesium alloys; Equal-channel angular pressing; Long-period stacking ordered; Mechanical property; MECHANICAL-PROPERTIES; YIELD ASYMMETRY; MICROSTRUCTURE;

D O I：

10.1016/j.jmrt.2021.05.108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel method was developed via the continuous refinement of grains to prepare an Mg-6.5Y-1.2Er-1.6Zn (wt.%) alloy with a ductility of 35% and an ultimate tensile strength of 377 MPa. It involved the use of a 32-pass equal-channel angular pressing process. The strength and ductility of the obtained magnesium alloy after the rapid processing were improved by 188.5% and 700%, respectively, compared with an as-cast alloy. These im-provements are attributed to the refined 14H-LPSO, uniform distribution of the spheroi-dized second phase, and a large number of dynamic recrystallized grains. (c) 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

引用

页码：1752 / 1758

页数：7

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