皇冠网址大全-皇冠网开户地址是_百家乐计划工具_赌博全讯网网站 (中国)·官方网站

學術活動   NAVIGATION

Study on nanoscale interface engineering in metal matrix composites

時間:2023-11-08 來源: 作者: 攝影: 編輯:趙宇軒 上傳:

報告題目Study on nanoscale interface engineering in metal matrix composites

報告人:Gang JI(嵇罡)

報告人單位:University of Lille I(法國里爾第一大學)

報告時間:2023-11-13 09:30

會議地點:丁家橋校區科創大廈A1108會議室(騰訊會議:918-854-830)

舉辦單位: 先進輕質高性能材料研究中心

報告人簡介:Dr. G. JI obtained his Bachelor and Master degrees at Shanghai University in China and his Ph.D. degree atUniversité de technologie de Belfort Montbéliard (UTBM)in France. He joined CNRS as a permanent researcher in 2008. His current research interests include (1) design and engineering of interfaces of advanced metal matrix (nano-) composites for improved mechanical and thermal properties; (2) characterization and understanding of the metastable and anisotropic microstructure and defects in alloys and composites developed by additive manufacturing and (3) atomic-scale characterization for the local transformation of structure, chemistry and properties in complex multiphase materials. In his career to-date, Dr. JI has published around 120 peer-reviewed journal papers including Acta Mater., Angewandte Chimie, Nature Mater., (h-index: 40 from Google Scholar) and has around 100 contributions in international conferences. He is a member of editorial boards of journals “Nano Materials Science” and “Metals”. He was rewarded a 2016 Gledden Fellowship by University of Western Australia in Australia, 2023 IAAM scientist medal and is a guest Professor of the State Key Laboratory of Metal Matrix Composites at Shanghai Jiao Tong University in China.

報告摘要:The nature of the interface between ceramic reinforcement particles and metal matrix defines how such ceramic particles (CP) can be used to achieve favorable mechanical properties in metal matrix composites (MMCs). However, strength-ductility trade-off is usually an inevitable scenario in most MMCs where introduction of reinforcement particles significantly degrade ductility. The decrease of ductility is mainly attributed to dislocation pile-ups at the high mismatch interface between reinforcement particles and matrix, which cannot lead to effective dislocation multiplication and annihilation, finally leading to a low work hardening rate. To address this challenge, we propose a new precipitation-assisted interface tailoring (PAIT) mechanism to improve the coherency of interface between reinforcement particles and matrix by introducing a three-dimensional (3D) interphase (IP). Using a nano-TiB2/Al-Zn-Mg-Cu composite as the model material, a Mg(Zn1.5Cu0.5) 3D IP is introduced by heat treatment to improve the coherency and strength of the TiB2/Al interface with the aim of transforming the high mismatch TiB2/Al interface into the low mismatch TiB2/3D IP/Al multi-interfaces. This effectively promotes dislocation multiplication and subsequent dislocation annihilation to increase the work hardening rate by restricting the dislocation pile-ups surrounding the interface, thus leading to a higher ductility. In the second part of this talk, we will exploit the feasibility of optimal interface engineering in MMCsby rapid solidification techniques, such as laser direct energy deposition (L-DED) additive manufacturing.

審核:賈志宏

學術活動
免费百家乐官网倍投| 银河百家乐官网的玩法技巧和规则| 澳门百家乐的赢钱不倒翁| 威尼斯人娱乐城提款| 永利高足球投注网| 百家乐官网游戏介绍与分析| 送现金百家乐的玩法技巧和规则| 安陆市| 百家乐官网7人桌布| 大博金娱乐| 网上百家乐玩法| 水果老虎机游戏| 百家乐官网赌场在线娱乐| 百家乐群博乐吧blb8v| 丰宁| 百家乐视频免费下载| 顶级赌场下载| 新花园百家乐官网的玩法技巧和规则 | 东莞百家乐的玩法技巧和规则| 百家乐官网视频官网| 澳门百家乐官网玩大小| 百家乐智能分析软| 太阳城官方网站| 百家乐博彩策略论坛| 赌场百家乐官网是如何玩| 威尼斯人娱乐最新地址| 金世豪百家乐的玩法技巧和规则| 百家乐官网筹码防伪| 多多视频棋牌游戏| 24山天机申山寅向择日| 利博国际网址| 香港百家乐玩| 百合百家乐官网的玩法技巧和规则| 大发888 m摩卡游戏| 百家乐导航网| 百家乐官网双峰县| 保山市| 全讯网3| 百家乐官网赌博讨论群| bet365体育在线投注| 69棋牌游戏|