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| Correcting of Hot Compression Test and Constitutive Equation of NiTi SMA |
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Cite this article:
. Correcting of Hot Compression Test and Constitutive Equation of NiTi SMA. Acta Metall Sin, 2006, 42(10): 1036-1040 .
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Abstract In this paper, the hot compression test results of NiTi alloy have been analyzed. Errors caused by friction and thermal effect were corrected. The test temperature ranged from 725℃ to 975℃, and the strain rate ranged from 0.1 s-1 to 10 s-1. Constitutive equation at high temperature of NiTi alloy was established by curvilinear regression method. The simulation results agreed with the experiment. Research results provided the accurate material model for the numerical simulation of NiTi SMA plastic formation process.
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Received: 21 March 2006
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