Phase evolution and properties of Ni50Co23Fe2Ga25 Heusler alloy undercooled by electromagnetic levitation

被引：15
作者：
Prasad, R. V. S. [1 ]
Phanikumar, G. [1 ]
机构：
[1] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India
来源：
INTERMETALLICS | 2011年 / 19卷 / 11期
关键词：
Phase identification; Rapid solidification processing; Microstructure; Phase stability; Electron microscopy transmission; SHAPE-MEMORY ALLOYS; MARTENSITIC-TRANSFORMATION; GA; SOLIDIFICATION; EQUILIBRIA; SYSTEM; SELECTION;
D O I：
10.1016/j.intermet.2011.07.009
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Microstructure and properties of bulk samples of Ni50Co23Fe2Ga25 Heusler alloy undercooled and solidified in an electromagnetic levitation facility have been studied. Microstructure characterization showed the samples to consist of a mixture of fcc phase and non-modulated tetragonal martensite phase at low undercoolings and a single phase microstructure containing only martensite at high undercooling. The fcc phase content increases with undercooling up to 170 K and then disappears at undercooling above 200 K. Hardness and magnetization correlate differently with the phase content of the sample. (C) 2011 Elsevier Ltd. All rights reserved.
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收藏
页码：1705 / 1710
页数：6
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