講座題目：Direct energy deposition of functionally graded materials

主講人： Sergey Zherebtsov

主辦單位：材料科學(xué)與工程學(xué)院

時  間：2024年8月7日（周三），9：30 -11：00

地  點：材料學(xué)院三樓會議室

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.

個人簡介：俄羅斯別爾哥羅德國立大學(xué)材料科學(xué)與技術(shù)系主任，博士生導(dǎo)師。他的研究領(lǐng)域包括鈦與鈦合金中高溫大塑性加工形成超細(xì)晶粒微觀結(jié)構(gòu)；大應(yīng)變變形過程中晶粒細(xì)化行為研究；塑性加工對相間和晶界演變的影響；超細(xì)晶粒金屬和合金的機(jī)械性能評估。Zherebtsov教授已發(fā)表學(xué)術(shù)論文280余篇，總被引5400余次，H指數(shù)為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.