【9.23】Prof.Helen V.Atkinson
Topic: Cornflour, Ketchup and Parts for Cars: A Review of Semi-Solid Processing

2011-09-20
 

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.

For more details, please download
About us
Brief Introduction
History
Academic Pioneers
Directors
Organization
Campus
Living in IMR
Contact Us
Research
Research System
Research Progress
Technical Supporting
Research Center
People
Members of CAS and CAE
Directors of Division
Achievements
Find people
International Coorperation
Introduction
Lee Hsun Lecture Series
International Conferences
International Service
Agreements on Academic Exchange
Resource
Facilities
Library
Multimedia
Education
Journals
Join Us
Papers
Copyright © 2009 Institute of Metal Research Chinese Academy of Sciences
Email: webmaster@imr.ac.cn