Magnetic and structural transformation in off-stoichiometric NiMnGa alloys

被引：14
|
作者：
Singh, R. K. [1 ]
Shamsuddin, M. [2 ]
Gopalan, R. [1 ]
Mathur, R. P. [1 ]
Chandrasekaran, V. [1 ]
机构：
[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India
[2] Banaras Hindu Univ, Inst Technol, Dept Engn Met, Varanasi 221005, Uttar Pradesh, India
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 476卷 / 1-2期
关键词：
martensite transformation; NiMnGa alloys; magnetic shape memory alloys; microstructure;
D O I：
10.1016/j.msea.2007.04.110
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of Mn/Ga ratio on crystal structure, phase transformation, microstructure and magnetic properties has been investigated in Ni50Mn30+xGa20-x ferromagnefic shape memory alloys. The solidification microstructures of the as-cast alloys display either equiaxed or dendritic morphology with latter more pronounced in Mn-rich alloys. The martensitic transformation and the magnetic properties of the alloys are found to depend strongly on Mn/Ga ratio and thermal processing of the alloys. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：195 / 200
页数：6
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