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Evaluating the influence of pressure and torsional strain on processing by high-pressure torsion

Record type: Article

Tests were conducted on an Al-6061 alloy to evaluate the separate effects of the applied pressure and the torsional straining in processing by high-pressure torsion (HPT). The values of the Vickers microhardness were measured after processing and plotted both linearly across the diameters of the disks and as three-dimensional representations. The measurements show that the applied pressure increases the hardness in the absence of torsional straining. In the presence of a pressure and torsional straining, the hardness values are high at the edges of the disk but lower in the central region. There is a gradual evolution toward a hardness homogeneity with increasing numbers of HPT revolutions. The hardness values at the edges of the disks are reasonably independent of the applied pressure but the extent of this region of high hardness depends upon both the applied pressure and the numbers of turns in the HPT processing.

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Citation

Xu, Cheng, Horita, Zenji and Langdon, Terence G. (2008) Evaluating the influence of pressure and torsional strain on processing by high-pressure torsion Journal of Materials Science, 43, (23-24), pp. 7286-7292. (doi:10.1007/s10853-008-2624-z).

More information

Published date: December 2008
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 64570
URI: http://eprints.soton.ac.uk/id/eprint/64570
ISSN: 0022-2461
PURE UUID: 7c37a0f2-c0aa-4915-bf32-c2ea8936fa1e
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 08 Jan 2009
Last modified: 17 Jul 2017 14:12

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Contributors

Author: Cheng Xu
Author: Zenji Horita

University divisions


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