讲座题目：Direct energy deposition of functionally graded materials

主讲人： Sergey Zherebtsov

主办单位：材料科学与工程学院

时  间：2024年8月7日（周三），9：30 -11：00

地  点：材料学院三楼会议室

摘要：Functionally graded materials (FGM) have attracted great research interest due to the ability to gradually change the properties of a material by changing the composition and/or structure. Additive manufacturing has become one of the most attractive approaches for the production of metallic FGM.

Thanks to the flexibility of the process, it becomes possible to create gradient materials, as well as bimetallic products with different chemical compositions. The results of research and development of the Institute of Laser and Welding Technologies in the field of creating new materials for direct laser growth technology are presented. The possibilities of adjusting the chemical composition of alloys, creating new alloys from pure metals during the growth process, as well as the production of layered functional-gradient materials, and the possibility of introducing dispersion-strengthening particles into metal powders for direct laser growth are considered. Demonstrated experience in introducing new materials in industrial projects.

个人简介：俄罗斯别尔哥罗德国立大学材料科学与技术系主任，博士生导师。他的研究领域包括钛与钛合金中高温大塑性加工形成超细晶粒微观结构；大应变变形过程中晶粒细化行为研究；塑性加工对相间和晶界演变的影响；超细晶粒金属和合金的机械性能评估。Zherebtsov教授已发表学术论文280余篇，总被引5400余次，H指数为37；

Sergey Zherebtsov achieved his Ph.D. degree from Institute for Metals Superplasticity Problems, Ufa, Russia in 2002 and a Dr. habil., Phys. Metallurgy, Ural Federal University, Ekaterinburg, Russia in 2013. From 2002 to 2006, he worked in Ufa State Aviation Technical University as a lecturer (Ufa, Russia), Ibaraki University as a researcher (Hitachi, Japan), Institute for Metals Superplasticity Problems as a Research Associate (Ufa, Russia). In 2007, he joined in Belgorod State University and became a full-time professor. His research interests are about formation of ultrafine-grain microstructure in titanium and titanium alloys via warm large plastic working. Development of high-entropy alloys with specified structure and properties. Extensive TEM/SEM/EBSD studies of structural changes during plastic deformation. Effect of hot/warm/cold working on microstructure, including evolution of interphase and grain boundaries. Evaluation of mechanical properties of metals and alloys.