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Acta Mechanica Solida Sinica

, Volume 25, Issue 3, pp 285–298 | Cite as

A Constitutive Model for Transformation, Reorientation and Plastic Deformation of Shape Memory Alloys

  • Xianghe Peng
  • Bin Chen
  • Xiang Chen
  • Jun Wang
  • Huyi Wang
Article

Abstract

A constitutive model is developed for the transformation, reorientation and plastic deformation of shape memory alloys (SMAs). It is based on the concept that an SMA is a mixture composed of austenite and martensite, the volume fraction of each phase is transformable with the change of applied thermal-mechanical loading, and the constitutive behavior of the SMA is the combination of the individual behavior of its two phases. The deformation of the martensite is separated into elastic, thermal, reorientation and plastic parts, and that of the austenite is separated into elastic, thermal and plastic parts. Making use of the Tanaka’s transformation rule modified by taking into account the effect of plastic deformation, the constitutive model of the SMA is obtained. The ferroelasticity, pseudoelasticity and shape memory effect of SMA Au-47.5 at.%Cd, and the pseudoelasticity and shape memory effect as well as plastic deformation and its effect of an NiTi SMA, are analyzed and compared with experimental results.

Key words

shape memory alloys two-phase mixture transformation reorientation plasticity constitutive model 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2012

Authors and Affiliations

  • Xianghe Peng
    • 1
    • 2
  • Bin Chen
    • 1
    • 2
  • Xiang Chen
    • 1
    • 2
  • Jun Wang
    • 3
  • Huyi Wang
    • 3
  1. 1.Department of Engineering MechanicsChongqing UniversityChongqingChina
  2. 2.State Key Laboratory of Coal Mine Disaster Dynamics and ControlChongqing UniversityChongqingChina
  3. 3.China Academy of Engineering PhysicsMianyangChina

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