Microstructure Evolution during Friction Stir Welding of Metallic Materials
讲座名称：
Microstructure Evolution during Friction Stir Welding of Metallic Materials
讲座时间：
2019-05-29
讲座人：
Hiroyuki Kokawa
形式：
校区：
兴庆校区
实践学分：
讲座内容：
报告题目：Microstructure Evolution during Friction Stir Welding of Metallic Materials
报告人：Prof. Hiroyuki Kokawa，日本东北大学教授、原日本焊接学会主席、上海交通大学讲席教授
主持人：Suck-Joo Na教授
时 间：2019年5月29日上午 (周三) 9:00
地 点：仲英楼 材料学院第二会议室
内容简介:
Friction stir welding (FSW) is a revolutionary joining technique invented in 1991. This technique is widely considered as one of the most significant recent achievements in the field of joining. Being a solid-state process, FSW avoids solidification problems associated with conventional fusion welding and thereby yields sound joints, even in materials usually considered to be unweldable. The triumph of this technology resulted in its widespread usage for joining of various structural metallic materials. In turn, the practical success of the friction stirring techniques necessitates a more fundamental understanding of the underlying physical processes. Thus, microstructural and textural studies are presently becoming one of the key issues in the friction stirring field. The frictional heat and material flow during FSW form fine-grained microstructures with microtextures in metallic materials. Characteristics and distributions of microstructures often determine the weld properties. We have been conducted metallurgical studies of microstructures and properties of friction stir welded materials. I would like to introduce several achievements in this field by reviewing our previous studies.
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