Study of involution domain based interfaces in Ni-Ti-Cu Shape Memory Alloy

TL;DR

This paper presents an algorithm that analyzes phase transformations in Ni-Ti-Cu shape memory alloys using EBSD data to identify involution and Bain domains through orientation matrix analysis.

Contribution

It introduces a novel method for studying lattice correspondence and domain identification in shape memory alloys based on orientation matrices derived from EBSD data.

Findings

Successful identification of involution domains in Ni-Ti-Cu alloys

Development of a comprehensive algorithm for lattice transformation analysis

Enhanced understanding of phase transformation mechanisms

Abstract

An algorithm was made to study the lattice correspondence involved in phase transformation from cubic B2 to monoclinic B19'. The method is based on studying the orientation matrices generated from EBSD data. Starting from the very fundamental, coordinate transformation matrices as well as the vector transformation matrices have been walked through for a general non-orthogonal to the orthogonal system. Further, using the defined formulas, orientation matrices will be used to identify a new, non-generic Involution Domain and the already accepted Bain Domain.