报告题目(中文)：晶格应变非均匀的多功能高熵合金

报告题目(英文)：Multi-Functional High Entropy Alloys with Heterogeneous Lattice Strain

报告内容简介：

High entropy alloys have been recently attracted tremendous research interest worldwide because of their excellent mechanical, chemical and physical properties. In this talk, I would like to discuss our recent work that aims to address some fundamental questions in this field, such as entropic design of alloys and lattice distortion. Through extensive experiments and simulations, we are able to show that it is possible to develop multi-functional high entropy alloys by carefully mixing elements of distinct sizes, which could exhibit a combination of unique mechanical/physical properties, such as superb strength, excellent elastic strain limit, ultralow mechanical hysteresis, remarkable elinvar effect, superior plasticity and many others. At the fundamental level, we found that the multi-functionality of these high order alloys could be attributed to not only chemical fluctuations, but also the presence of heterogeneous lattice strains, both of which however are lacking in conventional alloys.

报告人姓名：杨勇

报告人简介(中文)：杨勇教授于2001年获得北京大学力学系学士学位，2003年香港科技大学土木系硕士学位，2007年美国普林斯顿大学机械航天系博士学位。2007年后回国后到香港理工大学机械系任助理教授，2012年转到香港城市大学。现为香港城市大学机械系，材料系，先进设计和系统工程系教授。研究方向为先进结构材料（金属玻璃，高熵合金，机械超材料）和低维金属陶瓷材料的的设计和制备以及增材制造。目前共发表学术论文超过180篇。过去五年（2017至2022年）的代表作发表在包括Nature, PNAS, Science Advances, Nano Letters, Materials Today，Progress in Materials Science 等国际主要期刊。杨勇教授目前已毕业博士16位，博士后7位，目前都任职于国内或者国外的科研机构。杨勇教授是国际先进材料协会会士，连续多年被Elsevier 评为全球前2%高引学者。

报告人简介(英文)：Professor Yang obtained his bachelor’s degree from Peking University in 2001, master’s degree from Hong Kong University of Science and Technology in 2003, and PhD degree from Princeton University in 2007. He is now affiliated with several departments in College of Engineering at City University of Hong Kong, and his current research interest includes nanomechanics, design of advanced bulk alloys (e.g., bulk metallic glasses, high entropy alloys) and low dimensional alloys/ceramics (e.g., nanosheets, nanowires, nanoparticles), materials informatics, nano-manufacturing and additive manufacturing (e.g., binder jet 3D printing). His work has been published in multi-disciplinary journals and leading journals in materials, such as Nature, Nature Materials, Nature Communications, Science Advances, PNAS, Advanced Materials, Materials Today, Nano Letters and etc

报告人单位(中文)：香港城市大学工程学院

报告人单位(英文)：College of Engineering, City University of Hong Kong

报告时间：2023-08-23 13:45

报告地点：宝山校区 东区16号楼 526 会议室

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联系人：王庆