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In-situ phase transformation studies of Ni48Mn39In13 melt-spun ribbons

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Title In-situ phase transformation studies of Ni48Mn39In13 melt-spun ribbons
 
Creator KUMAR, DMR
RAO, DVS
RAO, NVR
RAJA, MM
SINGH, RK
SURESH, KG
 
Subject Magnetic intermetallics
Rapid solidification processing
Microstructure
Electron microscopy
transmission
SHAPE-MEMORY ALLOYS
MARTENSITIC TRANSFORMATIONS
HEUSLER ALLOYS
GA ALLOYS
TEMPERATURES
 
Description The phase transformation in Ni48Mn39In13 melt-spun ribbons has been studied by employing in-situ transmission electron microscopy (TEM) techniques. At room temperature, the investigations showed the martensite phase consisting of plates with internal stacking faults. This phase exhibited the presence of 7M and 5M modulations. In addition, a small volume fraction of the austenite phase was observed. Upon in-situ heating from room temperature to 95 degrees C, the martensite phase transformed to austenite phase. However, in the subsequent cooling-heating cycles, the martensite phase was retained at high temperature. We discuss our experimental observations and the possible mechanisms for the stabilization of the martensite phase due to thermal cycling. (c) 2012 Elsevier Ltd. All rights reserved.
 
Publisher ELSEVIER SCI LTD
 
Date 2014-10-16T05:49:37Z
2014-10-16T05:49:37Z
2012
 
Type Article
 
Identifier INTERMETALLICS, 25126-130
http://dx.doi.org/10.1016/j.intermet.2012.01.029
http://dspace.library.iitb.ac.in/jspui/handle/100/15379
 
Language en