Microstructure Evolution and Corrosion Performance of AZ31 Magnesium Alloy Sheets

被引：0
作者：
Yang Qingshan [1 ,2 ]
Jiang Bin [1 ,2 ]
Xiang Qing [2 ]
Luo Suqin [1 ]
Yu Xiaowen [2 ]
Pan Fusheng [1 ,2 ]
机构：
[1] Chongqing Acad Sci & Technol, Chongqing 401123, Peoples R China
[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2016年 / 45卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Mg alloy; microstructure; twinning; corrosion behavior; MECHANICAL-PROPERTIES; MG ALLOY; BEHAVIOR;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
AZ31 Mg alloy sheets were pre-stretched (PRS) at the angles of 0 degrees, 30 degrees, 45 degrees, 60 degrees and 90 degrees between the tensile direction and the extrusion direction at room temperature. Twinning was thus introduced and gradually increased. The microstructure evolutions and corrosion behavior were examined and compared. Results show that the corrosion performance of the twinned Mg alloy sheets is sensitive to the area fraction of twins. Meanwhile, the sheet possessing most area fraction of twins (similar to 52%) exhibits the best corrosion resistance. This is attributed to the subdivision of grains by introducing extension twin boundaries. Twinning brings about more grain boundaries that act as a corrosion barrier and thus improve the corrosion resistance.
引用
收藏
页码：1674 / 1677
页数：4
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