报告时间：2023年5月16日（星期二）9:00-11:00

报告地点：学术会议中心二楼小报告厅

报 告 人：周伟 教授

工作单位：新加坡南阳理工大学

举办单位：材料科学与工程学院

报告简介：

Cold spray is an additive manufacturing process in which micron-sized solid particles are accelerated to supersonic speeds and then sprayed and bonded onto a substrate surface. It is an emerging technology that is able to deposit a wide variety of materials in the solid state at temperatures well below their melting points. The solid-state deposition helps to avoid the undesirable changes in chemical compositions or microstructures which are commonly associated with other deposition processes such as arc welding, laser directed energy deposition, or thermal spray. Mechanisms of the solid-state bonding are discussed first, and then emphasis is placed on how to make use of the technology to repair and restore engineering structures. Special attention will be paid to the high-value structures such as aerospace structures made of Ti alloys or defence applications where special materials are used. Methods for structural integrity assessment of the restored structures are also presented.

报告人简介：

Professor Wei Zhou is with School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore. He graduated with a BEng degree in Welding from Tsinghua University and obtained PhD in materials science and metallurgy from University of Cambridge. He has carried out extensive research on a wide range of advanced manufacturing processes, including welding, 3D printing, and cold spray. He has worked closely in collaboration with many industrial partners such as Rolls-Royce, UK and Schaeffler Group, Germany. Currently he serves as President, International Society for Intelligent Manufacturing and Chairman, Welding Technology Committee of Singapore Welding Society. He is a Fellow of Singapore Welding Society, International Association of Applied Mechanics, and Indian Structural Integrity Society。