Effect of heat treatment on adiabatic shear susceptibility in ZK60 magnesium alloy

被引：20

作者：

Yang, Yang ^{[1
,2
,3
]}

Jiang, Lihong ^{[1
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

[2] China Acad Engn Phys, Inst Fluid Phys, Mianyang 621900, Peoples R China

[3] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 664卷

关键词：

Adiabatic shear susceptibility; Adiabatic shear bands; Heat treatment; ZK60 magnesium alloy; SELF-ORGANIZATION; STRAIN-RATE; BANDS; LOCALIZATION; DEFORMATION; MICROSTRUCTURE; TITANIUM;

D O I：

10.1016/j.msea.2016.04.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Adiabatic shear susceptibility was investigated in the ZK60 magnesium alloy by means of the radial collapse of a thick-walled cylinder. The adiabatic shear susceptibility of ZK60 magnesium alloy samples with different heat treated conditions were evaluated in light of their self-organization characteristics of adiabatic shear bands, such as shear- band spacing, shear- band average length, shear- band average propagated velocity. It is shown that the shear- band spacing in the (as-quenched) sample was 5.2 mm with the effective strain of 0.72 and 4.72 mm with the effective strain of 0.95, one order of magnitude more than that of the peak-aged sample, with shear- band spacing of 0.49 mm (epsilon(ef)=0. 72) and 0.38 mm (epsilon(ef)=0. 95), respectively. Calculations indicated that the average velocity of shear band propagates nearly 2.5 times faster in the peak-aged sample (271 m/s) than in that of the (as-quenched)sample (105 m/s). Experimental results show that the peak-aged sample has higher adiabatic shear susceptibility, due to precipitates and the higher strength of the peak-aged samples. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：146 / 154

页数：9

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