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Static softening in a Ni-30Fe austenitic model alloy after hot deformation: microstructure and texture evolution

Beladi, Hossein, Cizek, Pavel, Taylor, Adam S., Rohrer, Gregory S. and Hodgson, Peter D. 2017, Static softening in a Ni-30Fe austenitic model alloy after hot deformation: microstructure and texture evolution, Metallurgical and materials transactions A, vol. 48A, no. 2, pp. 855-867, doi: 10.1007/s11661-016-3880-1.

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Title Static softening in a Ni-30Fe austenitic model alloy after hot deformation: microstructure and texture evolution
Author(s) Beladi, Hossein
Cizek, Pavel
Taylor, Adam S.
Rohrer, Gregory S.
Hodgson, Peter D.
Journal name Metallurgical and materials transactions A
Volume number 48A
Issue number 2
Start page 855
End page 867
Total pages 13
Publisher Springer
Place of publication New York, N.Y.
Publication date 2017-02
ISSN 1073-5623
Keyword(s) Science & Technology
Technology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Materials Science
Summary In the current study, the microstructure and texture characteristics of a model Ni-30Fe austenitic alloy were investigated during hot deformation and subsequent isothermal holding. The deformation led to the formation of self-screening arrays of microbands within a majority of grains. The microbands characteristics underwent rather modest changes during the post-deformation annealing, which suggests that limited dislocation annihilation occurs within the corresponding dislocation walls. The fraction of statically recrystallized (SRX) grains progressively increased with the holding time and closely matched the softening fraction measured from the offset flow stress approach. The corresponding texture was weak and preserved its character with the holding time. There was no pronounced temperature effect on the grain boundary character distribution after the completion of SRX. The Σ3 and Σ9 coincidence site lattice boundaries were characterized as (111) pure twist and (1−14) symmetric tilt types, respectively. Nonetheless, the recrystallization temperature slightly affected the grain boundary network.
Language eng
DOI 10.1007/s11661-016-3880-1
Field of Research 0912 Materials Engineering
0306 Physical Chemistry (Incl. Structural)
0913 Mechanical Engineering
Socio Economic Objective 0 Not Applicable
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2016, Minerals, Metals & Materials Society and ASM International
Persistent URL http://hdl.handle.net/10536/DRO/DU:30092217

Document type: Journal Article
Collection: Institute for Frontier Materials
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