Enhanced formability of superplastic AlMgZr alloys made by particulate routes

R. Cook, R. Grimes, R.J. Dashwood

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

1 Citation (Scopus)

Abstract

The technique of centrifugal atomisation has been used to produce a number of AlMgZr alloy particulates with Zr contents up to 1%. These have been converted into sheet by extrusion, rolling and heat treatment and their superplastic properties determined. It has been found that control of the solidification conditions during atomisation is crucial in order to maximise Zr solid solubility and achieve a fine dispersion of Al3Zr precipitates. Superplastic behaviour is enhanced at higher Zr contents, and by thermo-mechanical processing to achieve ductilities in excess of 600% at strain rates of 0.01 s-1. Alloy conditioning was found to have a significant effect on the Al3Zr precipitate size, with coarser precipitates relating to premature failure during testing. This paper describes the atomisation process and identifies the key parameters that must be controlled for its successful operation. A summary of the superplastic performance of the product will be included.
Original languageEnglish
Title of host publicationTMS Annual Meeting
EditorsY. T. Zhu, T. G. Langdon, R. S. Mishra, S. L. Semiatin, M. J. Saran, T. C. Lowe
PublisherThe Minerals, Metals & Materials Society
Pages281-288
Number of pages8
Publication statusPublished - 2002
EventTMS Annual Meeting - Seattle, United Kingdom
Duration: 17 Feb 200221 Feb 2002
https://www.tms.org/Meetings/Annual-02/AnnMtg02Home.html

Conference

ConferenceTMS Annual Meeting
CountryUnited Kingdom
CitySeattle
Period17/02/0221/02/02
Internet address

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