Achieving high strength and high ductility in magnesium alloys using severe plastic deformation combined with low-temperature aging

被引：174
|
作者：
Kim, W. J. [1 ]
Jeong, H. G. [2 ]
Jeong, H. T. [3 ]
机构：
[1] Hongik Univ, Dept Mat Sci & Engn, Seoul 121791, South Korea
[2] KITECH, Mfg Proc Res Ctr, Digital Prod Proc Team, Inchon 463130, South Korea
[3] Kangnung Natl Univ, Dept Met & Mat Engn, Kangnung 210702, Gangwon Do, South Korea
来源：
SCRIPTA MATERIALIA | 2009年 / 61卷 / 11期
关键词：
Severe plastic deformation (SPD); Magnesium alloys; Ductility; Ultrafine-grained microstructure; Aging; AZ91 MG ALLOY; MECHANICAL-PROPERTIES; GRAIN-SIZE; MICROSTRUCTURE; BEHAVIOR; SHEETS; AL; EXTRUSION; TEXTURE;
D O I：
10.1016/j.scriptamat.2009.08.020
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A novel method of fabricating age-hardenable magnesium alloys with high strength and high ductility was developed using high-ratio differential speed rolling combined with low-temperature aging. The ultrafine-grained Mg-9Al-1Zn alloy processed by this technique exhibited a high yield stress of >400 MPa and tensile elongations of 12-14%. The high strength could be attributed to grain size and particle strengthening effects, while the high ductility could be attributed to weakening of the basal texture component. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1040 / 1043
页数：4
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