MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Stress-induced Martensitic Transformation and Superelasticity of Alloys: Experiment and Theory
Victor A. L’vovAlexei A. RudenkoVolodymyr A. ChernenkoEduard CesariJaume PonsTakeshi Kanomata
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2005 Volume 46 Issue 4 Pages 790-797

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Abstract

The superelasticity of alloys undergoing a stress-induced martensitic transformation is studied in both experimental and theoretical way. Experimental stress–strain dependencies illustrating the different types of superelastic behavior are taken from Ni–Mn–Ga alloys typifying thermoelastic martensites and then modeled theoretically using a statistical approach to describe the growth of stress-induced martensite in the matrix of parent (austenitic) phase. A good agreement between the experimental and theoretical results is achieved whereby a physical interpretation of the different types of stress–strain dependencies is made and a quantitative evaluation of the main parameters controlling transformational behavior of the alloys is carried out.

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© 2005 The Japan Institute of Metals and Materials
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