Low temperature aging effect on structure, martensitic transformation and magnetic properties in ferromagnetic shape memory alloy of Mn2NiGa

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	Low temperature aging effect on structure, martensitic transformation and magnetic properties in ferromagnetic shape memory alloy of Mn2NiGa
	Song, RN ; Li, X ; Zhu, W ; Liu, EK ; Li, GJ ; Cai, JF ; Wang, WH ; Wu, GH
刊名	ACTA PHYSICA SINICA
	2011
卷号	60 期号:7
关键词	FIELD-INDUCED STRAIN AL-ZN ALLOYS HEUSLER ALLOY SYSTEM PHASE
ISSN号	1000-3290
通讯作者	Wu, GH: Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China.
中文摘要	The structure, the martensitic transformation and the magnetic properties of ferromagnetic shape memory alloy Mn2NiGa aged at low temperature are investigated. The lattice distortion and the internal stress are generated in the samples due to the fine precipitation generated during the aging treatment. When the precipitation concentration exceeds the tolerance limit of the parent phase lattice, it causes the martensitic transformation temperature to increase obviously, and thus the parent phase transforms to martensitic phase with a large coercivity up to 900 Oe. Because of the existence of internal stress, the reverse martensitic transformation is shifted toward high temperature up to 485 K. By extrapolating the experimental data, the Curie temperature of martensite is estimated at 530 K. The internal stress disappears and the martensite turns to be of the parent phase due to the coarsening of the precipitation at higher temperature. Two coarsening threshold temperatures are found to be 423 K and 485 K which are the temperature sensitive and the aging time sensitive, respectively.
收录类别	SCI
资助信息	National Natural Science Foundation of China [50971130]; National Basic Research Program of China [2010CB833102]
语种	中文
公开日期	2013-09-18
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/40999]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Song, RN,Li, X,Zhu, W,et al. Low temperature aging effect on structure, martensitic transformation and magnetic properties in ferromagnetic shape memory alloy of Mn2NiGa[J]. ACTA PHYSICA SINICA,2011,60(7).
APA	Song, RN.,Li, X.,Zhu, W.,Liu, EK.,Li, GJ.,...&Wu, GH.(2011).Low temperature aging effect on structure, martensitic transformation and magnetic properties in ferromagnetic shape memory alloy of Mn2NiGa.ACTA PHYSICA SINICA,60(7).
MLA	Song, RN,et al."Low temperature aging effect on structure, martensitic transformation and magnetic properties in ferromagnetic shape memory alloy of Mn2NiGa".ACTA PHYSICA SINICA 60.7(2011).