Analysis of plastic flow during high-pressure torsion
Analysis of plastic flow during high-pressure torsion
Finite-element modeling (FEM) was used to simulate processing by high-pressure torsion under quasi-constrained conditions using three different material conditions: strain-hardening, perfect-plastic, and flow-softening. The results show there is a tendency for flow localization during processing and this becomes more obvious during the processing of perfect-plastic, and flow-softening materials or when processing samples having high thickness to diameter ratios. The analysis demonstrates the effect of the material condition, the disk aspect ratio and the effect of friction between the disks and the anvil walls. It is demonstrated that the predictions from FEM correlate well with published experimental results.
7807-7814
Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Aguilar, Maria T.P.
3388e12c-0c7b-4138-95be-4ec4694f04be
Cetlin, Paulo R.
6fe5efb8-7976-4d56-8aae-08cbf76b9628
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2012
Figueiredo, Roberto B.
2e0060b8-6368-4d87-825a-c3cb90e92145
Aguilar, Maria T.P.
3388e12c-0c7b-4138-95be-4ec4694f04be
Cetlin, Paulo R.
6fe5efb8-7976-4d56-8aae-08cbf76b9628
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Figueiredo, Roberto B., Aguilar, Maria T.P., Cetlin, Paulo R. and Langdon, Terence G.
(2012)
Analysis of plastic flow during high-pressure torsion.
Journal of Materials Science, 47 (22), .
(doi:10.1007/s10853-012-6506-z).
Abstract
Finite-element modeling (FEM) was used to simulate processing by high-pressure torsion under quasi-constrained conditions using three different material conditions: strain-hardening, perfect-plastic, and flow-softening. The results show there is a tendency for flow localization during processing and this becomes more obvious during the processing of perfect-plastic, and flow-softening materials or when processing samples having high thickness to diameter ratios. The analysis demonstrates the effect of the material condition, the disk aspect ratio and the effect of friction between the disks and the anvil walls. It is demonstrated that the predictions from FEM correlate well with published experimental results.
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Published date: 2012
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 345695
URI: http://eprints.soton.ac.uk/id/eprint/345695
ISSN: 0022-2461
PURE UUID: 99fa5cc5-3fe4-4c4b-9c4c-b486d0c7c2fb
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Date deposited: 28 Nov 2012 11:55
Last modified: 15 Mar 2024 03:13
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Author:
Roberto B. Figueiredo
Author:
Maria T.P. Aguilar
Author:
Paulo R. Cetlin
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