清华大学材料科学与工程研究院《材料科学论坛》学术报告
报告时间：2025年11月17日下午14:00-16:00
报告人：Tadashi Furuhara（Tohoku University）
报告地点：清华大学逸夫技术科学楼A205学术报告厅
邀请人：陈浩老师
报告题目：Roles of thermomechanical processing on microstructure control of high strength steels
报告简介：
Since the early 1960’s, various kinds of thermomechanical processing have been developed for improving strength and ductility/toughness balances of high strength steels. Major interests were on grain size controls and hot deformation of austenite matrix was useful to refine final microstructure after phase transformations to ferrite, bainite and martensite structure during cooling. In 1990’s and 2000’s, severe plastic deformation attracted strong interests in achieving ultrafine grained structure and the essences of such metallurgical concepts were also explored for possible applications in production. It should be mentioned that new dynamic phenomena were recognized in phase transformation and recrystallization during those investigations. Recently, importance of re-heating processes has been emphasized to positively utilize microstructure inhomogeneities in researches of advanced high strength steel. In this lecture, importance of such technology, as well as its future perspectives, will be discussed from fundamental viewpoints of physical metallurgy.