Microstructure and texture evolution of the cold-rolled AZ91 magnesium alloy strip under electropulsing treatment

被引：91
|
作者：
Jiang, Yanbin [1 ]
Tang, Guoyi [2 ]
Shek, Chanhung [3 ]
Liu, Wei [4 ]
机构：
[1] Univ Sci & Technol Beijing, Key Lab Adv Mat Proc MOE, Beijing 100083, Peoples R China
[2] Tsinghua Univ, Grad Sch Shenzhen, Adv Mat Inst, Shenzhen 518055, Peoples R China
[3] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon Tong, Hong Kong, Peoples R China
[4] Tsinghua Univ, Dept Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 11期
基金：
中国国家自然科学基金;
关键词：
AZ91 magnesium alloy; Electropulsing; Recrystallization; Texture; MECHANICAL-PROPERTIES; MG-3AL-1ZN ALLOY; BEHAVIOR; ELONGATION; DUCTILITY; DENSITY; PHASE; AZ31;
D O I：
10.1016/j.jallcom.2011.01.052
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of electropulsing treatment (EPT) on the microstructure and texture evolution of the cold-rolled AZ91 magnesium alloy strip was investigated using X-ray diffraction (XRD) and electron backscattered diffraction patterns (EBSD). The results indicated that EPT accelerated tremendously the recrystallization behaviour of the cold-rolled AZ91 magnesium alloy strip at a relatively low temperature within a short time of 7 s. It also suppressed precipitation of beta-Mg17Al12 phase, compared with conventional heat treatment. The recrystallized grains favourably weakened the intensity of the basal texture. A mechanism for rapid recrystallization process during EPT was proposed based on the enhancement of nucleation rate and atomic diffusion resulting from the coupling of the thermal and athermal effects. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：4308 / 4313
页数：6
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