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Orientation dependence of the substructure characteristics in a Ni- 30%Fe austenitic alloy deformed in hot torsion

Cizek, Pavel, Beladi, Hossein, Taylor, Adam S. and Hodgson, Peter D. 2013, Orientation dependence of the substructure characteristics in a Ni- 30%Fe austenitic alloy deformed in hot torsion, Materials science forum, vol. 753, pp. 54-57, doi: 10.4028/www.scientific.net/MSF.753.54.

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Title Orientation dependence of the substructure characteristics in a Ni- 30%Fe austenitic alloy deformed in hot torsion
Author(s) Cizek, Pavel
Beladi, Hossein
Taylor, Adam S.
Hodgson, Peter D.
Journal name Materials science forum
Volume number 753
Start page 54
End page 57
Total pages 4
Publisher Trans Tech Publications
Place of publication Stafa-Zurich, Switzerland
Publication date 2013
ISSN 0255-5476
Keyword(s) crystallographic texture
deformation microstructure
dislocation boundaries
hot torsion
microbands
Ni-30%Fe austenitic alloy
Summary The present work examines the microstructure and texture evolution in a Ni-30wt.%Fe austenitic model alloy deformed in torsion at 1000 °C, with a particular emphasis on the orientation dependence of the substructure characteristics within the deformed original grains. Texture of these grains was principally consistent with that expected for simple shear and comprised the main A, B and C components. The deformation substructure within the main texture component grains was characterised by "organised" arrays of parallel microbands with systematically alternating misorientations, locally accompanied by micro-shear bands within the C grains. With increasing strain, the mean subgrain size gradually decreased and the mean misorientation angle concurrently increased towards the saturation. The stored deformation energy within the main texture component grains was principally consistent with the respective Taylor factor values. The microband boundaries corresponded to the expected single slip {111} plane for the A oriented grains while these boundaries for the C oriented grains represented a variety of planes even for a single grain.
Language eng
DOI 10.4028/www.scientific.net/MSF.753.54
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
Copyright notice ©2013, Trans Tech Publications
Persistent URL http://hdl.handle.net/10536/DRO/DU:30055441

Document type: Journal Article
Collection: Institute for Frontier Materials
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Created: Tue, 27 Aug 2013, 12:28:27 EST

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