报告题目(中文)：超高强钢抗氢脆的冶金方法

报告题目(英文)：Metallurgical means against hydrogen embrittlement in ultra-high strength steels

报告内容简介：Due to the application of eve r-stronger steels for automotive components the phenomenon of hydrogen embrittlement appears increasingly often. A small content, even less than 1 ppm, of diffusible hydrogen in steel of over 1000 MPa strength can lead to damage and degradation of the material performance. Diffusible hydrogen can freely move within the crystal lattice. When hydrogen is tied to lattice defects – so-called trapped hydrogen – it loses its damaging effect. The damaging effect of hydrogen is seen in a reduced load bearing capacity of steel, a reduced energy absorption under impact loading or by delayed cracking. Accordingly it is important of keeping the residual hydrogen content in the steel as low as possible during steelmaking. Since the absorption of hydrogen during later manufacturing processes or in the use phase cannot be excluded, it is of primary interest to reduce the sensitivity of steel against deleterious hydrogen effects. This can firstly be achieved by the dedicated implementation of hydrogen traps. Secondly, the resistance against crack propagation can be enhanced by modification of the microstructure. The current state-of-the-art in recent ultra-high strength automotive steels will be demonstrated.

报告人姓名：Prof.Hardy Mohrbacher

报告人简介(中文)：Hardy博士，本科就读于德国萨尔大学（Universität des Saarlandes -Germany），硕士就读于美国休斯敦大学（University of Houston— USA），1995年比利时鲁汶大学（Katholieke Universiteit Leuven，Belgium) 博士毕业。曾工作于德国德累斯顿 Fraunhofer Institute for Nondestructive Testing 著名研究所，比利时The Research Centre of theARBED-SIDMAR steel group in Ghent研究中心技术经理， 德国Laser Welded Semi- Products at ThyssenKrupp Tailored Blank GmbH in Duisburg部门经理，Automotive Applications at Niobium Products Company /CBMM（巴西矿业公司）Europe in Düsseldorf (Germany)的商务部门经理，曾任比利时鲁汶大学的副教授，2008-2011年曾聘为上海大学兼职教授。 Hardy博士主要研究领域包括：板材合金设计和加工，板材金属的成型和焊接，轿车车体设计，无损探伤、测试和表征技术，硬质材料的触变行为。在钢铁的铌和钼微合金化方面有着很高的学术造诣，目前是中信金属公司外籍专家、匈牙利科学院通讯会员、Niobelcon bvba公司总裁。2007年以来每年来我校为材料学院师生做一次学术关于微合金钢铁材料方面的讲座，是“上海大学--中信-CBMM（巴西矿业公司）含铌铸造合金联合实验室”外籍咨询专家。

报告人单位(中文)：中信-CBMM（巴西矿业公司）资深专家

报告时间：2017-01-19 09:00

报告地点：日新楼401