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Formation and Growth of Antiphase Domains During Recrystallization of Cold-Rolled Cu3Au

Published online by Cambridge University Press:  22 February 2011

Rui Yang  and
Robert W. Cahn
Rui Yang
Affiliation:
Department of Materials Science & Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, England
Robert W. Cahn
Affiliation:
Department of Materials Science & Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, England
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Abstract

An experimental study by TEM was made of the morphology of the antiphase domains formed when heavily rolled Q13AU is annealed at a temperature slightly below the critical temperature for ordering, Tc. Domains are formed at the advancing grain boundary with extremely small size and grow as recrystallization proceeds. From an early stage, domain walls show a preference for (100) orientation. The key question is raised whether domain formation during recrystallization entails the presence of a disordered zone at a moving grain boundary near Tc, and the conclusion is that such a zone is probably present. A provisional theory is constructed for the genesis of domains during recrystallization, taking into account the dragging force which newly formed domains exert on a moving grain boundary thereby diminishing the effective driving force for grain boundary motion, and a critical domain size is estimated which should completely inhibit grain-boundary motion. The intriguing fact that no domains at all are formed during the recrystallization of strongly ordered intermetallics such as Ni3Al is briefly discussed and a reason is proposed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 41
Copyright
Copyright © Materials Research Society 1995

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References

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