A constitutive model for transformation, reorientation and plastic deformation of shape memory alloys

Autor:	Xianghe Peng, Chen Xiang, Huyi Wang, Bin Chen, Jun Wang
Rok vydání:	2012
Předmět:	Austenite Materials science Mechanical Engineering Constitutive equation Computational Mechanics Shape-memory alloy Plasticity SMA Mechanics of Materials Martensite Pseudoelasticity Forensic engineering Composite material Deformation (engineering)
Zdroj:	Acta Mechanica Solida Sinica. 25:285-298
ISSN:	0894-9166
DOI:	10.1016/s0894-9166(12)60026-3
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fb4d5893167fa14dd9f95e6e993b8085 https://doi.org/10.1016/s0894-9166(12)60026-3 Zobrazit plný text záznamu Full Text from ScienceDirect Full text from SpringerLink