

Author: Firth M. Williams W.M.
Publisher: Maney Publishing
ISSN: 0008-4433
Source: Canadian Metallurgical Quarterly, Vol.8, Iss.4, 1969-10, pp. : 331-335
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Abstract
The distribution of alloying elements in commercial grade Al-Mn ingot was studied using electron probe microanalysis, and the effect of homogenization heat treatment was followed for periods up to 5 days.In the as-cast material, nearly all the Mn was present in solid solution; heat treatment at 625°C caused the precipitation of most of the Mn within 2 hours, suggesting that industrial heat treatment time could be reduced to similar low values. Recrystallization experiments confirmed that short homogenization times produced the desired objectives of a fine grain size and a reduction in the recrystallization temperature of the final hot- and cold-rolled material.