eng Oriental Scientific Publishing Company Material Science Research India 0973-3469 2020-07-30 17 specialissue2020 03 06 16306 article Arunabha M. Roy 1 University of Michigan, Aerospace Engineering Department, Ann Arbor, MI 48109, U.S.A. A phase-field (PF) model for the phase transformation (PT) between austenite and martensite and twinning between two martensite is presented where PT is described by a single order parameter. Such a description helps us to obtain the analytical solution of interface energetics and kinetics. PF-elasticity problems are solved for cubic-to-tetragonal PT in NiAl. The stress and temperature-induced PT and corresponding twinning and growth of the martensitic phase inside a nanocrystal are simulated. It reproduces nontrivial experimentally observed nanostructure such as splitting and bending of martensitic nanostructure as well as twins crossing. The evolution and morphology of such interesting nanostructures are discussed. https://www.materialsciencejournal.org/specialissue2020/evolution-of-martensitic-nanostructure-in-nial-alloys-tip-splitting-and-bending/ Ginzburg-Landau (G-L) Equation Phase-Field Approach Phase Transition in Martensite