报告题目: Methodology of science and engineering—Part 3: Concept of hydrogen embrittlement（科学与工程方法论-第三节：氢脆的概念）
报告人：Prof.Kiyoshi Yokogawa（日本产业技术综合研究所）
报告时间：2023年12月30日下午14:30~17:00
会议方式：腾讯会议（会议号: 149-832-328 ）
欢迎广大师生踊跃参加!
机械与汽车工程学院
2023年12月27日
报告摘要：
Hydrogen embrittlement (HE) is generally recognized as hydrogen induced degradation of mechanical property of “steel”, because steel has been widely used as the basement of structure in our daily life. The lecture provides an in-depth exploration of hydrogen embrittlement (HE) in metals, particularly focusing on steel. It discusses the fundamental principles of HE, including metal-hydrogen potential curves and phase diagrams. The impact of various factors like strain rate and temperature on HE is examined. The lecture stresses the importance of understanding the mechanisms behind HE for both academic research and practical engineering applications. It also addresses broader topics such as the role of scientific methodology in engineering, practical considerations in engineering design, and the relevance of this research in the context of carbon neutrality and hydrogen safety. The conclusion highlights the project's contribution to these areas and encourages ongoing research.
报告人简介：
Kiyoshi Yokogawa，博士，日本产业技术综合研究所教授，是国际顶级的氢脆专家，取得了一系列处于国际领先水平的研究成果：首次发现氢致微裂纹起源于应变诱导马氏体富集区和奥氏体富集区的边界，而非传统认为的应变诱导马氏体，为揭示亚稳态奥氏体不锈钢的氢脆机理奠定了重要基础；基于分子动力学，建立了高压氢气环境中Ni基金属材料的塑性变形分析模型；首次发现石墨化炭纳米结构的环状超结构和5圆环原子图像，揭示了炭纳米纤维的结构。多次应邀到美国、德国、韩国讲学。在国际刊物发表高水平论文110余篇，获授权专利12项（其中美国专利3项，日本专利9项），出版相关专著6本。获日本金属学会突出贡献奖、韩国机械学会突出贡献奖。
