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Dynamic recrystallization of austenite in Ni-30 Pct Fe model alloy : microstructure and texture evolution

Beladi, Hossein, Cizek, Pavel and Hodgson, Peter D. 2009, Dynamic recrystallization of austenite in Ni-30 Pct Fe model alloy : microstructure and texture evolution, Metallurgical and materials transactions A : physical metallurgy and materials science, vol. 40, no. 5, pp. 1175-1189, doi: 10.1007/s11661-009-9799-z.

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Title Dynamic recrystallization of austenite in Ni-30 Pct Fe model alloy : microstructure and texture evolution
Author(s) Beladi, Hossein
Cizek, Pavel
Hodgson, Peter D.
Journal name Metallurgical and materials transactions A : physical metallurgy and materials science
Volume number 40
Issue number 5
Start page 1175
End page 1189
Total pages 4
Publisher Springer New York LLC
Place of publication New York, N.Y.
Publication date 2009-05
ISSN 1073-5623
1543-1940
Summary The microstructure and crystallographic texture development in an austenitic Ni-30 pct Fe model alloy was investigated within the dynamic recrystallization (DRX) regime using hot torsion testing. The prominent DRX nucleation mechanism was strain-induced grain boundary migration accompanied by the formation of large-angle sub-boundaries and annealing twins. The increase in DRX volume fraction occurred through the formation of multiple twinning chains. With increasing strain, the pre-existing Σ3 twin boundaries became gradually converted to general boundaries capable of acting as potent DRX nucleation sites. The texture characteristics of deformed grains resulted from the preferred consumption of high Taylor factor components by new recrystallized grains. Similarly, the texture of DRX grains was dominated by low Taylor factor components as a result of their lower consumption rate during the DRX process. The substructure of deformed grains was characterized by “organized,” banded subgrain arrangements, while that of the DRX grains displayed “random,” more equiaxed subgrain/cell configurations.
Language eng
DOI 10.1007/s11661-009-9799-z
Field of Research 091207 Metals and Alloy Materials
Socio Economic Objective 861206 Structural Metal Products
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
HERDC collection year 2009
Copyright notice ©2009, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30022585

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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