新闻动态
综合新闻
科研动态
学术活动
媒体聚焦
通知公告
您现在的位置:首页 > 新闻动态 > 学术活动
9.23】Prof.Helen V.Atkinson
Topic:Cornflour,Ketchup and Parts for Cars: A Review of Semi-Solid Processing
 
2011-09-15 | 文章来源:李薰奖办公室        【 】【打印】【关闭

Lee Hsun Lecture Series

Topic: Cornflour, Ketchup and Parts for Cars: A Review of Semi-Solid Processing

Speaker: Professor Helen V. Atkinson

     Fellow of the Royal Academy of Engineering

     President of the UK Engineering Professors’ Council

     University of Leicester, UK

Time: 9:00-11:00,Fri.,23,Sept.2011

Venue: Room 403, R&D Center, IMR

Welcome to attend!

Abstract

The thixotropic behaviour of semi-solid metals was first discovered by Flemings and his group at MIT in the early 1970s. When alloy was stirred as it solidified, and then reheated into the semi-solid state, it behaved in a surprising way; on shearing it flowed with the consistency of heavy machine oil but when allowed to stand it could be handled like a solid. This behaviour (which is very like that of tomato ketchup) was then exploited in a family of semi-solid processing techniques, including:- thixoforming, thixoforging, thixocasting, rheocasting and rheoforming. ‘Thixomolding’(based on injection moulding) is used by numerous companies, particularly in Japan and the US to produce magnesium alloy components e.g. for portable computers and cameras, but it is not suitable for aluminium alloys. Aluminium alloys have been widely produced for automotive applications, mainly by thixocasting and thixoforming-type processes.

In the last few years, there has been a great increase in interest in semi-solid processing in China, India and other countries with many new ideas under investigation. This lecture will review the current situation.
文档附件

相关信息
联系我们 | 所长信箱 | 网站地图 | 友情链接
地址: 沈阳市沈河区文化路72号 邮编: 110016
管理员邮箱: office@imr.ac.cn
中国科学院金属研究所 版权所有 辽ICP备05005387号

官方微博

官方微信