Effect of Substructure Characteristics on the Dislocation Annihilation Process during Post-Deformation Annealing

Abstract:

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Two distinct substructures were produced in a Ni-30Fe austenitic model alloy by different thermomechanical processing routes. The first substructure largely displayed organized, banded subgrain arrangements with alternating misorientations, resulting from the deformation at a strain just before the initiation of dynamic recrystallization (DRX). By contrast, the second substructure was more random in character and exhibited complex subgrain/cell arrangements characterized by local accumulation of misorientations, formed through DRX. During the post-deformation annealing, the latter substructure revealed a rapid disintegration of dislocation boundaries leading to the formation of dislocation-free grains within a short holding time, though the former largely preserved its characteristics till becoming replaced by growing statically recrystallized grains.

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Periodical:

Edited by:

Matthew Barnett

Pages:

76-79

DOI:

10.4028/www.scientific.net/MSF.753.76

Citation:

H. Beladi et al., "Effect of Substructure Characteristics on the Dislocation Annihilation Process during Post-Deformation Annealing", Materials Science Forum, Vol. 753, pp. 76-79, 2013

Online since:

March 2013

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$35.00

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