Influence of Heat Treatment on the Mechanical Behaviour of a NiTi Alloy

Yinong Liu; P. G. McCormick

doi:10.2355/isijinternational.29.417

ISIJ International

Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559

Influence of Heat Treatment on the Mechanical Behaviour of a NiTi Alloy

Yinong Liu, P. G. McCormick

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Keywords: shape memory alloy, NiTi alloy, heat treatment, martensitic transformation, stress-induced transformation, tensile testing, thermal cycling

JOURNAL FREE ACCESS

1989 Volume 29 Issue 5 Pages 417-422

DOI https://doi.org/10.2355/isijinternational.29.417

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Abstract

Measurements of the effect of heat treatment following cold work on the yield and shape memory behaviour in a NiTi alloy are reported. Tensile behaviour is found to depend on test temperature and initial structure as well as annealing temperature. Minimum values of stress required for stress induced martensite, martensite reorientation and parent phase yield were found to be associated with the as-recrystallized structure. Measurements of reversion and permanent strains were found to depend on applied stress.

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