Special corrosion behavior of an inoculant refined Cu-Al-Mn shape memory alloy during electropolishing process

被引：4
作者：
Jiao, Zhixian [1 ]
Wang, Qingzhou [1 ]
Yin, Fuxing [1 ]
Cui, Chunxiang [1 ]
机构：
[1] Hebei Univ Technol, Sch Mat Sci & Engn, Key Lab New Type Funct Mat Hebei Prov, Tianjin 300130, Peoples R China
来源：
MATERIALS CHARACTERIZATION | 2019年 / 153卷
基金：
中国国家自然科学基金;
关键词：
Shape memory alloys; Corrosion; Transmission electron microscopy; Interface structure; Stress layer; GRAIN-REFINEMENT; 1ST-PRINCIPLES CALCULATIONS; MECHANICAL-PROPERTIES; PITTING CORROSION; NONMETALLIC INCLUSIONS; ALUMINUM-ALLOYS; STEEL; MICROSTRUCTURE; TRANSFORMATION; INTERFACES;
D O I：
10.1016/j.matchar.2019.05.026
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Cu-11.9Al-2.5Mn (wt%) shape memory alloy (SMA) refined by the Cu51Zr14 inoculant exhibits special corrosion behavior in electropolishing process, which makes the surface of the alloy look like a beautiful ink-washing painting. Transmission electron microscope (TEM) observation reveals that this can be ascribed to the stress layers existing near the Cu51Zr14/Cu-Al-Mn interfaces. Fortunately, these stress layers do not disturb the perfect lattice matching relationship between the Cu51Zr14 particle and the Cu-Al-Mn SMA. This study provides a simple and efficient method to pursue the distribution of inoculant particles in the refined alloys and to help us to reveal the refining mechanism.
引用
收藏
页码：348 / 353
页数：6
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