Landau Theory For Shape Memory Polycrystals

Details Landau Theory For Shape Memory Polycrystals Landau Theory For Shape Memory Polycrystals

2003-09-08

arxiv.org/abs/cond-mat/0309206v1

Physics

Condensed Matter

Materials Science

To appear in Acta Materialia

Scientific paper

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.

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