Paper Title:

A Comparative Study on the Softening Behaviour of Cold Rolled Ingot and Continuous Cast AA5754

Periodical Materials Science Forum (Volumes 519 - 521)
Main Theme Aluminium Alloys 2006 - ICAA10
Edited by W.J. Poole, M.A. Wells and D.J. Lloyd
Pages 1641-1646
DOI 10.4028/www.scientific.net/MSF.519-521.1641
Citation S. Sarkar et al., 2006, Materials Science Forum, 519-521, 1641
Online since July, 2006
Authors S. Sarkar, Mary A. Wells, Warren J. Poole
Keywords Al-Mg, Continuous Cast, Ingot Cast, Precipitation, Recovery, Recrystallization, Resistivity
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Abstract

An investigation was conducted on the softening behaviour of cold rolled continuous cast (CC) AA5754 Al alloy and compared to the results for the ingot cast (IC) material. The present study suggests that the CC material exhibits greater resistance to softening as compared to the IC AA5754 for the same amount of cold deformation. The differences in the softening kinetics become more noticeable with increasing level of cold deformation and from a processing point of view can be attributed to the absence of the homogenization stage during the processing of the CC material. Resistivity measurements were carried out during the annealing treatment of the CC materials to examine the possibility of concurrent precipitation, which could potentially retard the softening kinetics for these materials. In addition, the current research reveals that the CC material produces a finer recrystallized grain size as compared to the IC material.