Transformation Behavior of Shape Memory Alloys in Multiaxial Stress State

Abstract:

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The transformation behavior of shape memory alloys is simulated for complex loadings of stress, strain and temperature. Calculations are made by using the “Accommodation Model” which is a constitutive model for shape memory alloys considering the accommodation behavior of the transformation strain. Calculated results are presented for the transformation behavior in the axial and shear stress state. These results are compared with those obtained by the experiment where tube specimens of the Ti-Ni shape memory alloy are subjected to the axial and torsion loading. The proposed constitutive model can predict the transformation behavior including the plastic strain effect of polycrystalline Ti-Ni shape memory alloys under non-proportional multiaxial loading condition.

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Periodical:

Edited by:

Pietro Vincenzini, Stefano Besseghini, Shuichi Miyazaki, Eckhard Quandt and Minoru Taya

Pages:

46-51

DOI:

10.4028/www.scientific.net/AST.78.46

Citation:

T. Yamamoto et al., "Transformation Behavior of Shape Memory Alloys in Multiaxial Stress State", Advances in Science and Technology, Vol. 78, pp. 46-51, 2013

Online since:

September 2012

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$35.00

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