|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Symmetry Breaking and Pathway Degeneracy during Structural Phase Transformations
||Yipeng Gao, Suliman Dregia, Yunzhi Wang
|On-Site Speaker (Planned)
Pathway degeneracy of structure transformations with symmetry breaking underpins the functionalities of a broad class of smart materials – the ferroics. Despite of its significance, there has been a lack of rigorous theoretical description of pathway degeneracy. In this work, we incorporate lattice correspondence into group theory framework to define and determine pathway degeneracy during structural transformations. In particular we show that a stabilizer can be determined by taking into account either the deformation relationship (under a given lattice correspondence) or the orientation relationship, through which deformation variant is defined rigorously and distinguished clearly from the orientation variant. Such a definition provides a theoretical foundation for investigating the formation of domain and defect structures arising from symmetry breaking during structural phase transformations.
||Planned: A print-only volume