Atomic force microscopy study of stacking modes of martensitic transformation in Fe-Mn-Si based shape memory alloys

被引：2

作者：

Liu, DZ ^{[1
]}

Kikuchi, T ^{[1
]}

Kajiwara, S ^{[1
]}

Shinya, N ^{[1
]}

机构：

[1] Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan

来源：

SHAPE MEMORY MATERIALS | 2000年 / 327-3卷

关键词：

atomic force microscopy; martensitic transformation; stacking mode; Fe-Mn-Si based shape memory alloy;

D O I：

10.4028/www.scientific.net/MSF.327-328.255

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Stacking modes of thermally induced and stress-induced martensitic transformation in Fe-28Mn-6Si-5Cr shape memory alloys have been studied using atomic force microscopy (AFM). It has been found that thermally induced martensite plates appear with the self-accommodated stacking form, in which all the three possible variants with different [112] shear directions in a {111} plane are activated and formed in parallel but at separate places; i.e. each plate corresponds to one variant. In addition, a plastic deformation band is always induced in austenite between two different variants. On the other hand, stress-induced martensite plates appear with the mono-partial stacking form, i.e. only single variant is activated in a {111} plane in a grain. The difference between stacking modes of thermally induced and stress-induced martensites makes them play a different role in contributing to shape memory effect in Fe-Mn-Si based shape memory alloys.

引用

页码：255 / 258

页数：4

共 6 条

[1] Characterization of the stress-induced ε martensite in a Fe-Mn-Si-Cr-Ni shape memory alloy:: microstructural observation at different scales, mechanism of formation and growth [J].