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Factors influencing the development of homogeneity in disks processed by high-pressure torsion

Factors influencing the development of homogeneity in disks processed by high-pressure torsion
Factors influencing the development of homogeneity in disks processed by high-pressure torsion
High-pressure torsion (HPT) is an important processing technique in which a disk is subjected to a high pressure with concurrent torsional straining. In principle at least, the imposed strain is zero at the center of the disk and a maximum at the outer edge. This difference suggests, therefore, that materials processed by HPT will exhibit considerable inhomogeneity. This paper describes the results obtained in a series of experiments which were designed to evaluate the evolution of homogeneity during the processing of two materials by HPT. It is demonstrated that it is possible to achieve a reasonable level of homogeneity in both materials but there are important differences which reflect the dependence of the microstructure on the occurrence of dynamic recovery.
1662-9752
3-8
Xu, Cheng
af526865-aee4-4ef6-8174-def5c38149a2
Zhilyaev, Alexander P.
13424aa4-7ee2-4f00-a3a7-91ad6dbd1ec8
Horita, Zenji
011521b8-3b29-494b-bf3f-346827ddbcce
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Xu, Cheng
af526865-aee4-4ef6-8174-def5c38149a2
Zhilyaev, Alexander P.
13424aa4-7ee2-4f00-a3a7-91ad6dbd1ec8
Horita, Zenji
011521b8-3b29-494b-bf3f-346827ddbcce
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Xu, Cheng, Zhilyaev, Alexander P., Horita, Zenji and Langdon, Terence G. (2008) Factors influencing the development of homogeneity in disks processed by high-pressure torsion. Materials Science Forum, 584-586, 3-8. (doi:10.4028/0-87849-375-1.3).

Record type: Article

Abstract

High-pressure torsion (HPT) is an important processing technique in which a disk is subjected to a high pressure with concurrent torsional straining. In principle at least, the imposed strain is zero at the center of the disk and a maximum at the outer edge. This difference suggests, therefore, that materials processed by HPT will exhibit considerable inhomogeneity. This paper describes the results obtained in a series of experiments which were designed to evaluate the evolution of homogeneity during the processing of two materials by HPT. It is demonstrated that it is possible to achieve a reasonable level of homogeneity in both materials but there are important differences which reflect the dependence of the microstructure on the occurrence of dynamic recovery.

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More information

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

Identifiers

Local EPrints ID: 64266
URI: http://eprints.soton.ac.uk/id/eprint/64266
ISSN: 1662-9752
PURE UUID: b110be08-9b38-4c69-aed1-14281da6460d
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 06 Jan 2009
Last modified: 16 Mar 2024 03:28

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Contributors

Author: Cheng Xu
Author: Alexander P. Zhilyaev
Author: Zenji Horita

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