Time-dependent evolution of martensitic structure caused by magnetic field in Ni2MnGa magnetic shape memory alloy

被引：2
|
作者：
Glavatska, N [1 ]
Gavriljuk, V
Glavatskiy, I
Söderberg, O
Ge, Y
Ullakko, K
Lindroos, VK
机构：
[1] Inst Met Phys, Dept Alloyed Steels, UA-03680 Kiev 142, Ukraine
[2] Aalto Univ, Met Phys & Sci Mat Lab, FIN-02015 Helsinki, Finland
[3] Aalto Univ, Dept Engn Phys & Math, Biomed Engn Lab, FIN-02015 Helsinki, Finland
来源：
EUROPEAN MAGNETIC MATERIALS AND APPLICATIONS | 2001年 / 373-3卷
关键词：
Ni2MnGa; magnetic field; field-induced strain; kinetics; X-ray diffraction;
D O I：
10.4028/www.scientific.net/MSF.373-376.357
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Changes in the martensite structure, magnetically controlled strain under applied magnetic field in the Ni2MnGa alloy are studied in-situ as a function of time at constant values of temperature and field. The measurements were performed under applied magnetic field and after magnetic field is taken out (after-effect). It is found that the change in the martensitic structure and the corresponding strain occur during exposures under magnetic field. After-effect is also observed when magnetic field is taken out. The direction of magnetic field is shown to strongly affect the time dependence of the structure and field-induced strain. The data of X-Ray diffraction, optical microscopy and measurements of strain support this conclusion.
引用
收藏
页码：357 / 360
页数：4
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