報告題目：NanostructuredLightweight Alloys: Tuning Microstructure and Properties

報 告 人：Jürgen Eckert

報告時間：2021年1月21日16:00-17:00

報告地點：騰訊會議466 844 815

主辦單位：校科協、材料科學與技術學院

報告人簡介：

Jürgen Eckert教授，奧地利科學院院士，埃里希·施密德材料科學研究所所長，奧地利里奧本大學材料科學系教授。2006-2015，曾擔任德國德累斯頓萊布尼茨固體材料研究所（IFW Dresden）復雜材料研究所所長，德累斯頓工業大學教授。主要研究領域包括材料物理，亞穩態材料，結構-性能的相關性以及先進材料的結構和物理特性。目前是奧地利科學院和歐洲科學院委員、材料研究學會（MRS）會員。曾獲德國研究基金會的Gottfried Wilhelm Leibniz獎，Deutsche Gesellschaft für Materialkunde（DGM）的DGM獎，歐洲研究理事會的ERC-Advanced Grant，IS-MANAM高級科學家獎，中科院Hsun Lee獎等10余項，合作發表論文1100多篇。

報告摘要：

Among different processing routes, powdermetallurgy and rapid quenching have large potential for development of novelhigh-performance materials thanks to excellent control over phase andmicrostructure selection, and related physical and mechanical properties. Thisoverview describes methods and process variables employed for synthesis ofadvanced nanostructured lightweight metallic materials. These methods includerapid quenching and mechanical attrition for the production of metastablematerials, powder consolidation to create bulk specimens with the desiredmicrostructure and properties, and additive manufacturing for fabrication ofparts with complex geometries and modulated meso-scale microstructures.Experimental data for the resulting structures for single- and multi-phasematerials will be described for selected materials, including nanostructuredand ultrafine-grained phases, quasicrystals, composites and metallic glasses,and the mechanisms responsible for phase and microstructure formation and therelated properties will be discussed. Consideration of the problems andchallenges for bulk processing will also be addressed in order to derive designaspects and processing guidelines for property optimization of nanostructuredmetallic materials.