報告題目一：Recent developments on surface mechanical treatments
報告時間：12月9日15:30-16:30
報告題目二：Residual stress analysis on samples obtained byadditive fabrication: Cases of Nimonic C263 alloy & TiAl
報告時間：12月9日16:30-17:30
報告地點：線上形式
https://meeting.tencent.com/s/6WHejhkbPtUp
Meeting ID: 642 747 534
報告人：Vincent JI
主持人（邀請人）：趙小輝 教授
主辦單位：汽車材料教育部重點實驗室，伟德bv1946官网
摘要一：
Surface mechanical strengthening (SMS)is the most useful process to change the residual stress (RS) distribution,superficial morphology, surface microstructure and surface hardness. Thepurposes of SMS are to increasing the fatigue life, to prevent the stress corrosioncracking and to increase the wear resistance of mechanical components.
The classic SMS methods, such asmachining, rolling, shot-peening, have been largely applied on engineeringcomponents. The principal of RS generation by SMS will be synthesis. Theindustrial application cases of shot-peening will be presented.
Recent development of SMS, such as dualpeening, stress peening, ultrasonic peening, water peening (cavitation peening)and laser peening, will be introduced and discussed.
摘要二：
Residual stress can be generated duesto additive fabrication process. They can influence components’ utilisationproperties and their durability. It is important to determine the level and thedistribution of residual stress on samples obtained by additive fabrication.
Nimonic C263 powders (Ni-based alloy) have been used tofabricate samples by SLM (Selective Laser Melting) and DMD (Direct MetalDeposition) techniques. TiAl samples have been obtained by DMD technique.
The residual stresses have beenanalysis by X-ray diffraction method on Nimonic C263 samples and on TiAl samples after additive fabrication and after heat treatments.
Mechanical properties (tensile testsand hardness) have been studied on Nimonic C263 samples and the associatedmicrostructure has been observed.
報告人簡介：
Vincent JI是巴黎薩克雷大學(Paris-SaclayUniversity)特級教授(Distinguished Professor)、工學院材料機械和能源系主任，也是上海交大，北航，北京交大，南工大客座教授，從事材料微觀結構和力學性能的關系、工程材料失效分析、殘餘應力分析、表面強化的開發與應用方面的研究工作。Vincent JI是法國标準協會無損探測委員會會員，參與制定了法國1999版X射線殘餘應力測試标準和歐盟2009版X射線殘餘應力測試标準，自2015年任中國機械工程協會材料分會殘餘應力專業委員會副主任, 自2016年任中國機械工程學會失效分析分會噴丸技術專業委員會副主任。已發表SCI收錄的論文280餘篇，H因子34，它引次數超過4300次。
