报告题目：New strong and lightweight steels for automobiles
报告人：香港大学黄明欣副教授
时间：8月16日（星期二）下午3:00
地点：院楼531报告厅
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报告摘要：
With the aim to reduce vehicles' weight, novel strong and lightweight automotive steels are currently being developed in the steel industry. Three new automotive steels will be discussed in this presentation. The first one is a high-modulus low-density steel composite reinforced by TiB2. This steel composite is fabricated by eutectic solidification, suitable for large-scale industrial production. This steel composite has a strong interface due to its semi-coherent interface, resulting in a good ductility, suitable for automotive applications. The second steel is a nanotwinned steel with a high yield strength (1450 MPa), high ultimate tensile strength (1600 MPa) and considerable uniform tensile elongation (20%). Its mechanical properties have meet the target proposed by General Motors and DOE. The nanotwinned steel was manufactured by a simple thermomechanical treatment consisting of cold rolling and recovery annealing, which is suitable for large-scale production in the steel industry. Finally, the medium Mn Transformation-induced plasticity steel will be discussed, especailly the mechanism of Luders band formation will be highlighted.
主讲人简介：
黄明欣博士分别于2002年和2004年从上海交通大学工程力学系获得学士和硕士学位，于2008年从荷兰Delft University of Technology获得博士学位。从2008年至2010年，在法国ArcelorMittal (安赛乐米塔尔)研发部任研究工程师，主要从事高强度汽车钢的研发工作。从2010年起至今在香港大学机械工程系任职，2016年获得永久教职（tenured）,目前在香港大学机械工程系带领一个金属材料研究课题组，主要从事汽车高强钢的研究工作。
黄明欣博士是国际期刊Materials Science and Technology的编委，Materials and Metallurgical Transactions A 的Key reader, 在国际会议上多次做邀请报告，包括PTM2015，THERMEC, MRS等大型国际会议，也是多个国际会议的Scientific committee 成员。目前主持的基础科学研究项目包括香港研究资助局资助项目、国家自然科学基金项目、香港政府科技署项目，并同时与多家国内外公司紧密合作，例如美国通用汽车、法国ArcelorMittal、鞍钢等。黄明欣博士以第一作者或者通讯作者在Acta Materialia、Scripta Materialia、JMPS、IJP等国际期刊上发表SCI论文50余篇。