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A study of plastic deformation during axisymmetric forward spiral extrusion and its subsequent mechanical property changes

Farhoumand, A., Khoddam, S. and Hodgson, P.D. 2012, A study of plastic deformation during axisymmetric forward spiral extrusion and its subsequent mechanical property changes, Modelling and simulation in materials science and engineering, vol. 20, no. 8, doi: 10.1088/0965-0393/20/8/085005.

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Title A study of plastic deformation during axisymmetric forward spiral extrusion and its subsequent mechanical property changes
Author(s) Farhoumand, A.
Khoddam, S.
Hodgson, P.D.
Journal name Modelling and simulation in materials science and engineering
Volume number 20
Issue number 8
Publisher Institute of Physics Publishing
Place of publication Bristol, England
Publication date 2012
ISSN 0965-0393
1361-651X
Summary Axisymmetric forward spiral extrusion (AFSE) accumulates large strains in its sample while extruding it through a die with engraved spiral grooves. A three-dimensional finite element model of AFSE has been developed using ABAQUS to investigate the deformation mode in detail, including the effect of groove geometry and the heterogeneity of plastic deformation. The numerical results demonstrated that the strain distribution in the AFSE sample cross section is linear in the radial direction within a concentric core while the distribution, outside the core, in the vicinity of the grooves is non-linear and non-axisymmetric. Mechanical properties and grain structure changes of the deformed sample were investigated. Improvements of mechanical properties in the processed samples can be attributed to the domination of the shear deformation mode in a plane normal to the extrusion axis and consequently the elongation of grains in the tangential direction
Language eng
DOI 10.1088/0965-0393/20/8/085005
Field of Research 109999 Technology not elsewhere classified
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C2 Other contribution to refereed journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30051174

Document type: Journal Article
Collection: Institute for Frontier Materials
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