MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
A Thermal Perspective of NiTi Alloy under Non-Isothermal Conditions
Qingchao TianJiansheng Wu
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2001 Volume 42 Issue 11 Pages 2446-2451

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Abstract

Changes of phase transformation temperatures of a NiTi alloy have been investigated under non-isothermal conditions by using a differential scanning calorimeter (DSC). It has been found that the duration for phase transformation declines exponentially with increasing the heating rate. The specific heat capacity of the NiTi alloy at a constant pressure (CP) was also determined in the experiment. Differences in the variation tendency of the CP for the martensite and austenite phases have been observed. The temperature distribution of NiTi wire, when heated by electric current, was calculated based on CP measured, discussions addressing the calculation results are given.

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© 2001 The Japan Institute of Metals and Materials
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