Origin of high tension-compression yield asymmetry in as-extruded pure zinc

被引：20
|
作者：
Chen, Chun [1 ,2 ]
Huang, Hua [1 ,2 ]
Niu, Jialin [1 ,2 ]
Nie, Jian-Feng [3 ]
Yuan, Guangyin [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Natl Engn Res Ctr Light Alloy Net Forming, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Key State Lab Met Matrix Composites, Shanghai 200240, Peoples R China
[3] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia
来源：
SCRIPTA MATERIALIA | 2021年 / 200卷
基金：
中国国家自然科学基金;
关键词：
Biodegradable zinc; Mechanical properties; Tension-compression yield asymmetry; Schmid law; GRAIN-SIZE; STRAIN-RATE; MECHANICAL-BEHAVIOR; DEFORMATION; TEMPERATURE; SLIP; DISLOCATION; TRANSITION; TEXTURE; ZN;
D O I：
10.1016/j.scriptamat.2021.113922
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Zinc and its alloys have received increasing attention due to their potential to be applied as biodegradable implants. However, the distinct tension-compression yield asymmetry of zinc and its alloys after plastic forming is undesirable. Here we identify the strong tension-compression yield asymmetry in as-extruded pure zinc and reveal that higher {10 (1) over bar2}{(1) over bar 011} twinning activity under tension is the underlying reason. Based on the finding, weakening texture and refining grains are put forward as effective strategies to reduce the tension-compression yield asymmetry. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页数：6
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