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

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 martens...

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Bibliographic Details
Published inChinese physics B Vol. 20; no. 4; pp. 476 - 479
Main Author 田晓华 隋解和 张欣 冯雪 蔡伟
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.04.2011
Subjects
制备性能
微结构
微观结构
放电等离子烧结法
相变行为
磁性质
穿晶断裂
镍锰镓合金
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/20/4/047503

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Summary: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 con- tributes 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.
Bibliography:TG139.6
11-5639/O4
ferromagnetic shape memory alloys, magnetic properties, martensitic transformations spark plasma sintering
TB383
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/4/047503