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Title: Effect of thermal and thermo-mechanical cycling on the microstructure of Ni-rich NiTi shape memory alloys
Authors: Suresh, K. S.
Bhaumik S.K.
Suwas S.
Published in: Materials Letters
Abstract: Microstructural changes of Ni-rich NiTi shape memory alloy during thermal and thermo-mechanical cycling have been investigated using Electron Back Scattered Diffraction. A strong dependence of the orientation of the prior austenite grain on the misorientation development has been observed during thermal cycling and thermo-mechanical cycling. This effect is more pronounced at the grain boundaries compared to grain interior. At a larger applied strain, the volume fraction of stabilized martensite phase increases with increase in the number of cycling. Deformation within the martensite leads to stabilization of martensitic phase even at temperatures slightly above the austenite finish temperature. Modulus variation with respect to temperature has been explained on the basis of martensitic transformation. © 2013 Elsevier B.V.
Citation: Materials Letters (2013), 99(): 150-153
Issue Date: 2013
Publisher: Elsevier B.V.
Keywords: Electron back scattered diffraction
Grain boundaries
Shape memory alloys
Thermo-mechanical cycling
ISSN: 0167577X
Author Scopus IDs: 54882593400
Author Affiliations: Suresh, K.S., Department of Materials Engineering, Indian Institute of Science, Bangalore, 560012, India
Bhaumik, S.K., Materials Science Division, Council of Scientific and Industrial Research (CSIR), National Aerospace Laboratories, Bangalore, 560017, India
Suwas, S., Department of Materials Engineering, Indian Institute of Science, Bangalore, 560012, India
Corresponding Author: Suwas, S.; Department of Materials Engineering, Indian Institute of ScienceIndia; email:
Appears in Collections:Journal Publications [MT]

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