法国驻沈阳总领事馆将于10月30日下午来校举办科技分享会，邀请3名中法专家作题为《马氏体转变——从形状记忆效应到新型固态制冷》的科研分享，现场有中法语翻译。分享会后将举办酒会。欢迎师生届时参加。
时间：10月30日（周二），下午16:30
地点：南湖校区科学馆2楼201会议室
讲座嘉宾：
| Yudong ZHANG defended in 2004 a cotutelle PHD thesis (in Metz France), that has been awarded as “one among the 100 best theses” of China,a habilitation thesis in 2012, distinguished with summa cum laude. She has a permanent position as research engineer at University of Lorraine, in charge of a service of transmission electron microscopy. She works notably on martensitic transformation, shape memory alloys,publishes regularly papers in high level scientific journals. |
| Bo YANG has prepared a cotutelle PhD thesis on ferromagnetic shape memory alloys thin films, in Metz, France, under the supervision of Dr. Habil Yudong ZhangProf. Claude Esling, from the French side. His thesis was distinguished with summa cum laude,has been summarized in two Acta Materialia publications. In 2015, he joined the research group of Prof. Xiang Zhao as a post-doc in Northeastern University, China, where he recently got an associate professorship. |
| Claude ESLING is Professor Emeritus of University of Lorraine. He has worked on crystallographic textures with Prof. Hans Bunge, TU Clausthal-Zellerfeld, in the first part of his career,then for thirty years with Northeastern University Shenyang, on material treatment under high magnetic field,on Ferromagnetic Shape Memory Alloys, notably with the two co-authors of the Café des Sciences. |
讲座主题：《马氏体转变——从形状记忆效应到新型固态制冷》
内容简介：众所周知，马氏体相变是一种无原子扩散相变或称为切变型相变。马氏体相变过程原子以协同切变方式进行，从而导致晶体结构的变化形成马氏体。通常，原子的切变量小于原子间距，并且保持相对位置不变。马氏体转变是形状记忆效应的基础，即能够“记住”原始材料的形状，并且在外界环境（热、电或磁场等）刺激下能够恢复原始形状。另一方面，马氏体相变或者逆马氏体相变过程中伴随着热量变化，可以实现热量从低温物体向高温物体转移。利用马氏体相变的潜热的新型固态制冷技术，没有对臭氧层破坏作用的氟利昂制冷剂，具有绿色环保、高效节能等特点，被认为是最有望替代传统压缩空气制冷的新型制冷技术。