Journal
SCRIPTA MATERIALIA
Volume 64, Issue 3, Pages 280-283Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.10.004
Keywords
Austenite; Dislocation boundaries; Hot working; Strain path; Electron backscattering diffraction (EBSD)
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Funding
- EPSRC [EP/F023464/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F023464/1] Funding Source: researchfish
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The effects of large strain and strain path reversal on deformation microstructure development in austenite below recrystallization temperature were studied by hot torsion using an Fe-30 wt% Ni model alloy. Results show that high-angle boundaries (HABs) can be generated by both dislocation accumulation and subgrain rotation. Multiple strain reversals lead to less well-developed HABs in the original grains compared to single reversal deformed to the same strain. This is attributed to subgrain rotation mechanism being less effective at small strains. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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