Landau theory for shape memory polycrystals

R. Ahluwalia; T. Lookman; A. Saxena; R. C. Albers

doi:10.1016/j.actamat.2003.09.015

Landau theory for shape memory polycrystals

R. Ahluwalia
, T. Lookman
, A. Saxena
, R. C. Albers

Los Alamos National Laboratory Theoretical Division

科研成果: 期刊稿件 › 文章 › 同行评审

88 引用（Scopus）

摘要

We propose a Ginzburg-Landau theory for the elastic properties of shape memory polycrystals. A single crystal elastic free energy for a system that undergoes a square-to-rectangle transformation is generalized to a polycrystal by introducing a crystal orientational field that is determined from a continuum phase-field model. The coupled system is used to study domain morphology and mechanical properties of shape memory alloys in different temperature regimes.

源语言	英语
页（从-至）	209-218
页数	10
期刊	Acta Materialia
卷	52
期	1
DOI	https://doi.org/10.1016/j.actamat.2003.09.015
出版状态	已出版 - 5 1月 2004
已对外发布	是

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AB - We propose a Ginzburg-Landau theory for the elastic properties of shape memory polycrystals. A single crystal elastic free energy for a system that undergoes a square-to-rectangle transformation is generalized to a polycrystal by introducing a crystal orientational field that is determined from a continuum phase-field model. The coupled system is used to study domain morphology and mechanical properties of shape memory alloys in different temperature regimes.

KW - Landau theory

KW - Martensites

KW - Polycrystals

KW - Shape memory

KW - Stress-strain response

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Landau theory for shape memory polycrystals

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