Paper Title:

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

Periodical Materials Science Forum (Volume 753)
Main Theme Recrystallization and Grain Growth V
Chapter Chapter 2: Deformation Structures
Edited by Matthew Barnett
Pages 76-79
DOI 10.4028/
Citation Hossein Beladi et al., 2013, Materials Science Forum, 753, 76
Online since March 2013
Authors Hossein Beladi, Pavel Cizek, Adam S. Taylor, Peter D. Hodgson
Keywords Hot Torsion, Ni-30Fe Alloy, Post-Deformation Annealing, Substructure
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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.