Date of Original Version




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Abstract or Description

The unusual properties of many multifunctional materials originate from a structuralphase transformation and consequent martensitic microstructure. Phase-field models are typically used to predict the formation of microstructural patterns and subsequent evolution under applied loads. However, formulating a phase-field energy with the correct equilibrium crystal structures and that also respects the crystallographic symmetry is a formidable task in complex materials. This paper presents a simple method to construct such energy density functions for phase-field modeling. The method can handle complex equilibrium structures and crystallographic symmetry with ease. We demonstrate it on a shape memoryalloy with 12 monoclinic variants.





Published In

Applied Physics Letters, 96, 081916.