Numerical Investigations of Thermally Induced Transformation, Reorientation of Martensite Variants and Shape Memory Effect Using Constitutive Model for Accommodation of Transformation Strain

Abstract:

To confirm the constitutive model developed by the present authors, example calculations are conducted for the transformation behavior of shape memory alloys. The constitutive model describes the transformation behavior of the material by calculating the transformation stress and strain of transformation systems of micro structures in the material. In the calculating, the accommodation mechanism acting on microstructures of the material is also taken into consideration. Computational results by the constitutive model for these loading paths are revealed to be reasonable in comparing with experimental observations.

• Periodical: Materials Science Forum (Volume 687)
• Pages: 510-518
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.687.510
• Online since: June 2011
• Authors: Hiroki Cho, Akihiko Suzuki, Takaei Yamamoto, Yuji Takeda, Toshio Sakuma
• Keywords: Accommodation Mechanism, Constitutive Model, Phase Transformation, Reorientation, Reverse Transformation, Shape Memory Alloy Actuator, Shape Memory Effects (SME)

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