2006/05/23 by Mathieu Bouville, Rajeev Ahluwalia · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Microstructure and Mechanical Properties of Steels #Microstructure and mechanical properties #Shape Memory Alloy Transformations #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevlett.97.055701
published as Phys. Rev. Lett. 97, 055701 (2006) · 4 pages, 5 figures
arxiv created 2006/05/23 · openalex publication_date 2006/08/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Materials which can undergo extremely fast displacive transformations as well as very slow diffusive transformations are studied using a Ginzburg-Landau framework. This simple model captures the essential physics behind microstructure formation and time-temperature-transformation diagrams in alloys such as steels. It also predicts the formation of mixed microstructures by an interplay between diffusive and displacive mechanisms. The intrinsic volume changes associated with the transformations stabilize mixed microstructures such as martensite-retained austenite (responsible for the existence of a martensite finish temperature) and martensite-pearlite.