[J] Materials science of martensitic and bainitic transformations and its applications

[J30] Formation of abnormal grain structure of austenite during reverse transformation of a hot-work tool steel

*Hoang-Anh Pham^1,2, Shigekazu Morito^1,2, Takuya Ohba², Taisuke Hayashi³ (1. Shimane University, Graduate School of Science and Technology, 2. Next Generation Tatara Co-Creation Centre, 3. Department of Material Analysis)

Keywords:Hot-work tool steel、Reverse transformation、Abnormal grain、In-situ observation、Austenite

We observe in-situ and ex-situ the formation of abnormal austenite grain during reverse transformation of a hot-work tool steel.