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Microstructure evolution in hot worked and Annealed Magnesium Alloy AZ31

journal contribution
posted on 2008-01-01, 00:00 authored by Aiden BeerAiden Beer, Matthew BarnettMatthew Barnett
The present work examines the microstructure that evolves during the annealing of hot worked magnesium alloy AZ31. First, the influences of deformation and annealing conditions on the microstructures are assessed. It is found that the annealing behaviour is consistent with what one would expect for a recrystallization type reaction. Whilst both the deformation and annealing conditions influence the time required to reach a stable annealed microstructure, the grain size attained is governed solely by the prior deformation conditions employed. At the highest temperature and strain rate examined, the rate of recrystallization is quite high and the grain size was found to be approximately double when annealed for only 1 s prior to quenching. Finally, semi-empirical equations are developed to predict the kinetics of recrystallization, as well as the evolution of grain size, during annealing.

History

Journal

Materials science and engineering A: structural materials: properties, microstructures and processing

Volume

485

Issue

1-2

Pagination

318 - 324

Publisher

Elsevier SA

Location

Amsterdam, Netherlands

ISSN

0921-5093

eISSN

1873-4936

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2008, Elsevier