Abstract
A comprehensive description for the constitutive behavior of polycrystalline shape memoryalloys (SMAs) is proposed based on a two-phase mixture model incorporating theconventional theory of plasticity. An SMA is composed of austenite and martensite phases,and its constitutive behavior should be the combination of the individual behavior of eachof the two phases. In the interested ranges of stress and temperature, the behavior of theaustenite is assumed to be linearly elastic while that of martensite is assumed tobe elastoplastic. The main features of SMAs, such as shape memory effect andpseudoelasticity, can be successfully replicated with the proposed constitutive model. Theconstitutive behavior of SMA Au–47.5 at.% Cd subjected to uniaxial forward and reverseloading and the pseudoelasticity of Cu–Al–Zn–Mn SMA polycrystal subjected toproportional and nonproportional complex stress or strain histories are simulated andcompared with the experimental results.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
