DEVELOPMENT OF A SHAPE MEMORY ALLOY FE-MN-SI

被引:94
作者
SATO, A
MORI, T
机构
[1] Department of Materials Science and Engineering, Tokyo Institute of Technology, Midori-ku, Yokohama, 227, Nagatsuta
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1991年 / 146卷 / 1-2期
关键词
D O I
10.1016/0921-5093(91)90277-T
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
An austenitic shape memory alloy containing about 30 wt.% Mn and an appropriate amount of silicon has been developed. It is a cost-saving alloy and can be used for practical applications. When the strain is less than approximately 5%, the alloy exhibits a complete shape memory effect (SME) of one-way type. Contrary to most shape memory alloys which have ordered structures, the Fe-Mn-Si alloy without an ordered structure has a hysteresis as large as 500 K. SME of the alloy originates in the f.c.c. reversible h.c.p. martensitic transformation. The macroscopic properties and microscopic mechanisms involved in the martensitic transformation are reviewed.
引用
收藏
页码:197 / 204
页数:8
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