Microstructural, phase transformation and magnetic properties of Ni-Mn-Ga alloy fabricated by spark plasma sintering

被引：6
作者：
Tian Xiao-Hua [1 ,2 ]
Sui Jie-He [1 ]
Zhang Xin [1 ]
Feng Xue [1 ]
Cai Wei [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Univ Sci & Technol, Coll Appl Sci, Harbin 150080, Peoples R China
来源：
CHINESE PHYSICS B | 2011年 / 20卷 / 04期
基金：
中国国家自然科学基金;
关键词：
ferromagnetic shape memory alloys; magnetic properties; martensitic transformations; spark plasma sintering; SHAPE-MEMORY ALLOYS; FIELD-INDUCED STRAIN; MARTENSITIC-TRANSFORMATION; HEUSLER ALLOY; NI2MNGA; NIMNGA; CRYSTALS; BEHAVIOR;
D O I：
10.1088/1674-1056/20/4/047503
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The microstructural, phase transformation and magnetic properties of Ni-Mn-Ga alloy fabricated using the spark plasma sintering method have been investigated. The results show that both the as-sintered and annealed sintered specimens exhibit typical martensitic transformation behaviours. The martensite of the sintered specimen after annealing exhibits a ferromagnetic nature. Moreover, study of the fracture surface indicates that the transgranular fracture contributes to the higher ductility of sintered Ni-Mn-Ga alloy. In addition, the transformation strain in sintered Ni-Mn-Ga alloy is studied for the first time.
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收藏
页数：4
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