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Effect of secondary phase particles on postrecrystallization grain growth in reactive spray deposited 5083 Al alloys

Published online by Cambridge University Press:  31 January 2011

S. L. Dai
Affiliation:
Second Department, Beijing Institute of Aeronautical Materials, Beijing 100095, People's Republic of China
J-P. Delplanque
Affiliation:
Engineering Division, Colorado School of Mines, Golden CO 80401-1887
E. J. Lavernia
Affiliation:
Department of Chemical and Biochemical Engineering and Materials Science, University of California at Irvine, Irvine, CA 92697–2575
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Abstract

Grain growth behavior in reactive spray deposited Al–Mg–Mn alloy 5083 and 5083 + Zr was quantitatively studied at 500, 530, and 560 °C. Results show that reactive spray deposited 5083 processed using N2–5% O2, in which no significant volume fraction of oxide particles was found, experienced significant grain growth when annealed at 500, 530, and 560 °C following recrystallization. On the other hand, reactive spray deposited 5083 atomized with N2–10% O2 and 5083 + Zr atomized with N2–5% O2 exhibited very slow grain growth below 530 °C and limited grain growth at 560 °C. This behavior is attributed to the retardation effect of the secondary phase particles that were formed in these alloys.

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Articles
Copyright
Copyright © Materials Research Society 1999

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