| Microstructural,phase transformation and magnetic properties of Ni-Mn-Ga alloy fabricated by spark plasma sintering |
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| 作者姓名： | 田晓华 隋解和 张欣 冯雪 蔡伟 |
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| 作者单位： | School of Materials Science and Engineering,Harbin Institute of Technology College of Applied Science,Harbin University of Science and Technology |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No. 50971052) and the Scientific Research Fund of Heilongjiang Provincial Education Department of China (Grant No. 11531059). |
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| 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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| 关 键 词： | ferromagnetic shape memory alloys magnetic properties martensitic transformations spark plasma sintering |
| 收稿时间： | 2010-11-18 |
Microstructural, phase transformation and magnetic properties of Ni–Mn–Ga alloy fabricated by spark plasma sintering |
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| Tian Xiao-Hu,Sui Jie-He,Zhang Xin,Feng Xue and Cai Wei.Microstructural,phase transformation and magnetic properties of Ni-Mn-Ga alloy fabricated by spark plasma sintering[J].Chinese Physics B,2011,20(4):47503-047503. |
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| Authors: | Tian Xiao-Hu Sui Jie-He Zhang Xin Feng Xue and Cai Wei |
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| Institution: | School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;College of Applied Science, Harbin University of Science and Technology, Harbin 150080, China;School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| Abstract: | 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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| Keywords: | ferromagnetic shape memory alloys magnetic properties martensitic transformations spark plasma sintering |
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