| Influence of stresses on martensitic transformation in ferromagnetic shape memory Ni_(50)Mn_(19)Fe_6Ga_(25) ribbons |
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| 作者姓名： | MENG Fanbin LI Yangxian LIU Heyan QU Jingping LIU Zhuhong CHEN Jinglian & WU Guangheng .School of Mechanical Science and Engineering Hebei University of Technology Tianjin China .State Key Laboratory for Magnetism Institute of Physics Chinese Academy of Sciences Beijing China |
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| 作者单位： | MENG Fanbin1，LI Yangxian1，LIU Heyan1，QU Jingping1，LIU Zhuhong2，CHEN Jinglian2 & WU Guangheng2 1.School of Mechanical Science and Engineering，Hebei University of Technology，Tianjin 300130，China; 2.State Key Laboratory for Magnetism，Institute of Physics，Chinese Academy of Sciences，Beijing 100080，China |
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| 基金项目： | 国家自然科学基金，河北省自然科学基金 |
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| 摘 要： | ~~Influence of stresses on martensitic transformation in ferromagnetic shape memory Ni_(50)Mn_(19)Fe_6Ga_(25) ribbons1. Ullakko, K., Huang, J. K., O'Handley, R. C. et al., Large magnetic-field-induced strains in Ni2MnGa single crystals, Appl. Phys. Lett., 1996, 69(13): 1966-1968.
2. James, R. D., Wuttig, M., Magnetostriciton of martensite, Philos. Mag., 1998, A 77: 1273-1275.
3. Wu, G. H., Yu, C. H., Meng, L. Q. et al., Giant magnetic-field-induced strains in H…
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Influence of stresses on martensitic transformation in ferromagnetic shape memory Ni50Mn19Fe6Ga25 ribbons |
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| MENG Fanbin,LI Yangxian,LIU Heyan,QU Jingping,LIU Zhuhong,CHEN Jinglian & WU Guangheng .School of Mechanical Science and Engineering,Hebei University of Technology,Tianjin ,China, .State Key Laboratory for Magnetism,Institute of Physics,Chinese Academy of Sciences,Beijing ,China.Influence of stresses on martensitic transformation in ferromagnetic shape memory Ni_(50)Mn_(19)Fe_6Ga_(25) ribbons[J].Science in China(Technological Sciences),2004,47(6). |
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| Authors: | Meng Fanbin LI Yangxian LIU Heyan QU Jingping LIU Zhuhong CHEN Jinglan WU Guangheng |
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| Affiliation: | 1. School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China
2. State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China |
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| Abstract: | The influence of stresses on martensitic transformation in Nis0Mn19Fe6Ga25 melt-spun ribbons was studied. X-ray diffraction examination shows that the ribbon has a pure cubic L21 phase at room temperature and that the ribbon surface exhibits 100] preferentially oriented texture, while the 110] axis is about 45° tilted from the normal of the ribbon. By calculating the d spacing at different angles with the length direction of the ribbon, the tension was observed. It was found that the direction of the stress was along 010] direction of the oriented textured grains. During cooling, there is no obvious structural transition observed in as-spun ribbons. However, when the ribbons were annealed at 900 K for 24 h, the tension along 010] direction disappeared and the structural transition from cubic to tetragonal occurred obviously during cooling. It indicates that it is the tension along 010] direction to suppress the martensitic transformation in the as-spun ribbons. |
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| Keywords: | stress martensitic transformation ferromagnetic shape memory alloy |
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