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Title: The role of grain-boundary disorder in the generation and growth of antiphase domains during recrystallization of cold-rolled Cu{sub 3}Au

Abstract

An experimental study by transmission electron microscopy was made of the morphology of the antiphase domains formed when heavily rolled Cu{sub 3}Au is annealed at a temperature slightly below the critical temperature for ordering, T{sub c}. Domains are formed at the advancing grain boundary with extremely small size and they grow as recrystallization proceeds. From an early stage, domain walls show a preference for {l_brace}100{r_brace} orientations. Diffraction experiments using a 1 nm probe on a scanning transmission electron microscope were conducted on a grain boundary 8.5{degree} off the {Sigma}3 coincident site lattice orientation. The results show that the superlattice reflection near to the boundary is markedly weaker than that away from it, suggesting the existence of an atomically disordered grain boundary zone 1--2 nm thick. A theory was constructed for the genesis and growth of domains during recrystallization, taking into account the dragging pressure which newly formed domains exert upon a moving grain boundary, thereby diminishing the effective driving pressure for grain-boundary motion; 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 Ni{sub 3}Al is discussed and amore » reason is proposed.« less

Authors:
; ;  [1]
  1. Univ. of Cambridge (United Kingdom). Dept. of Materials Science and Metallurgy
Publication Date:
OSTI Identifier:
389835
Resource Type:
Journal Article
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 44; Journal Issue: 9; Other Information: PBD: Sep 1996
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COPPER ALLOYS; RECRYSTALLIZATION; GOLD ALLOYS; INTERMETALLIC COMPOUNDS; DEFORMATION; ANNEALING; TRANSMISSION ELECTRON MICROSCOPY; MORPHOLOGY; DOMAIN STRUCTURE; CRITICAL TEMPERATURE; GRAIN BOUNDARIES; ORIENTATION; ENERGY BALANCE

Citation Formats

Yang, R, Botton, G A, and Cahn, R W. The role of grain-boundary disorder in the generation and growth of antiphase domains during recrystallization of cold-rolled Cu{sub 3}Au. United States: N. p., 1996. Web. doi:10.1016/1359-6454(95)00445-9.
Yang, R, Botton, G A, & Cahn, R W. The role of grain-boundary disorder in the generation and growth of antiphase domains during recrystallization of cold-rolled Cu{sub 3}Au. United States. https://doi.org/10.1016/1359-6454(95)00445-9
Yang, R, Botton, G A, and Cahn, R W. 1996. "The role of grain-boundary disorder in the generation and growth of antiphase domains during recrystallization of cold-rolled Cu{sub 3}Au". United States. https://doi.org/10.1016/1359-6454(95)00445-9.
@article{osti_389835,
title = {The role of grain-boundary disorder in the generation and growth of antiphase domains during recrystallization of cold-rolled Cu{sub 3}Au},
author = {Yang, R and Botton, G A and Cahn, R W},
abstractNote = {An experimental study by transmission electron microscopy was made of the morphology of the antiphase domains formed when heavily rolled Cu{sub 3}Au is annealed at a temperature slightly below the critical temperature for ordering, T{sub c}. Domains are formed at the advancing grain boundary with extremely small size and they grow as recrystallization proceeds. From an early stage, domain walls show a preference for {l_brace}100{r_brace} orientations. Diffraction experiments using a 1 nm probe on a scanning transmission electron microscope were conducted on a grain boundary 8.5{degree} off the {Sigma}3 coincident site lattice orientation. The results show that the superlattice reflection near to the boundary is markedly weaker than that away from it, suggesting the existence of an atomically disordered grain boundary zone 1--2 nm thick. A theory was constructed for the genesis and growth of domains during recrystallization, taking into account the dragging pressure which newly formed domains exert upon a moving grain boundary, thereby diminishing the effective driving pressure for grain-boundary motion; 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 Ni{sub 3}Al is discussed and a reason is proposed.},
doi = {10.1016/1359-6454(95)00445-9},
url = {https://www.osti.gov/biblio/389835}, journal = {Acta Materialia},
number = 9,
volume = 44,
place = {United States},
year = {Sun Sep 01 00:00:00 EDT 1996},
month = {Sun Sep 01 00:00:00 EDT 1996}
}