应材料科学与工程学院黄陆军教授的邀请，俄罗斯别尔哥罗德国立大学Sergey Zherebtsov教授于2022年12月01日（周四）举行线上学术讲座，题目为“PRODUCTION, PROPERTIES AND APPLICATION OF ULTRAFINE GRAINED TITANIUM ALLOYS”，欢迎感兴趣的师生参加。
讲座时间：2022年12月01日（周四），16:00 -17:00 (北京时间)
摘要：One of the promising approaches to improve both performance and mechanical properties of structural materials is associated with an ultrafine-grained (UFG) structure. This is particularly important for titanium alloys, which are usually used in those industries where the weight and size of products are the key parameters, i.e. in astronautics, shipbuilding, automotive, medicine, etc. Microstructure refinement can be achieved by large deformation at low temperatures, however existing methods of UFG structure production have a number of limitations. Since microstructure of titanium alloys can be quite sensitive to strain due to, for example, twinning in commercially pure titanium or globularization of initial lamellar structure in two-phase alloys. This lecture is to discuss regularities of controlling microstructure evolution during large warm deformation and to propose effective methods for large-scaled UFG semi-finished products of titanium alloys with improved mechanical properties.
个人简介：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.