Effects of annealing treatment on the microstructure and corrosion behavior of hot rolled AZ31 Mg alloy

被引：32

作者：

Chen, Hao ^{[1
]}

Tang, Jianwei ^{[2
]}

Gong, Weiwei ^{[1
]}

Gao, Yunpeng ^{[1
]}

Tian, Feng ^{[1
]}

Chen, Liang ^{[2
]}

机构：

[1] Inner Mongolia Power Res Inst, Hohhot 010020, Peoples R China

[2] Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Shandong, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2021年 / 15卷

关键词：

Mg alloy; Annealing; Microstructure; Recrystallization; Corrosion rate; MAGNESIUM ALLOY; DYNAMIC RECRYSTALLIZATION; MECHANICAL-PROPERTIES; PLASTIC-DEFORMATION; HEAT-TREATMENT; CAST; EVOLUTION; ORIENTATION;

D O I：

10.1016/j.jmrt.2021.10.099

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The annealing treatments were conducted at various temperatures and time using hot rolled AZ31 Mg sheets. The effects of annealing temperature and time on the microstructure and corrosion rate were investigated. The rolled AZ31 Mg consisted of coarse deformed grains with high stored energy, deformation twins, and recrystallized grains with free strain, showing the highest corrosion rate of 10.3 mm/year. The annealing effectively slowed down the corrosion rate of AZ31 Mg by increasing the grain size and decreasing the numbers of dislocations, twins and second phase particles. A high annealing temperature of 450 degrees C and a long holding time of 5 h further reduced the corrosion rate of AZ31 Mg to quite low level of 3.5 mm/year. (C) 2021 The Author(s). Published by Elsevier B.V.

引用

页码：4800 / 4812

页数：13

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