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Factors influencing the shearing patterns in equal-channel angular pressing

Factors influencing the shearing patterns in equal-channel angular pressing
Factors influencing the shearing patterns in equal-channel angular pressing
The shearing patterns are calculated for equal-channel angular pressing (ECAP) under three different conditions: (i) rotation of a sample around the X-axis when using a die angle of 90°, (ii) rotation around the X-axis when using a die angle of 120° and (iii) rotation around the Y- and Z-axes when using plate samples with a die angle of 90°. Separate sets of shearing patterns are constructed for the four standard processing routes: route A with no rotation of the sample between consecutive passes, routes BA and BC with rotations of 90° in alternate directions or the same direction between each pass, and route C with a rotation of 180° between passes. It is concluded that the development of a uniform microstructure of equiaxed grains, separated by high-angle grain boundaries, is favored using route BC because (i) shearing occurs over large angular ranges on the three orthogonal planes within the sample, (ii) there is a regular and periodic restoration of an equiaxed structure during consecutive pressings and (iii) deformation occurs on each orthogonal plane.
equal-channel angular pressing, metal processing, severe plastic deformation, shearing
0921-5093
97-109
Furukawa, Minoru
1ff823a3-0407-4215-889d-92fb66f8915c
Horita, Zenji
011521b8-3b29-494b-bf3f-346827ddbcce
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Furukawa, Minoru
1ff823a3-0407-4215-889d-92fb66f8915c
Horita, Zenji
011521b8-3b29-494b-bf3f-346827ddbcce
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Furukawa, Minoru, Horita, Zenji and Langdon, Terence G. (2002) Factors influencing the shearing patterns in equal-channel angular pressing. Materials Science and Engineering: A, 332 (1-2), 97-109. (doi:10.1016/S0921-5093(01)01716-6).

Record type: Article

Abstract

The shearing patterns are calculated for equal-channel angular pressing (ECAP) under three different conditions: (i) rotation of a sample around the X-axis when using a die angle of 90°, (ii) rotation around the X-axis when using a die angle of 120° and (iii) rotation around the Y- and Z-axes when using plate samples with a die angle of 90°. Separate sets of shearing patterns are constructed for the four standard processing routes: route A with no rotation of the sample between consecutive passes, routes BA and BC with rotations of 90° in alternate directions or the same direction between each pass, and route C with a rotation of 180° between passes. It is concluded that the development of a uniform microstructure of equiaxed grains, separated by high-angle grain boundaries, is favored using route BC because (i) shearing occurs over large angular ranges on the three orthogonal planes within the sample, (ii) there is a regular and periodic restoration of an equiaxed structure during consecutive pressings and (iii) deformation occurs on each orthogonal plane.

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More information

Published date: 2002
Keywords: equal-channel angular pressing, metal processing, severe plastic deformation, shearing
Organisations: Physics & Astronomy, Engineering Sciences

Identifiers

Local EPrints ID: 23798
URI: http://eprints.soton.ac.uk/id/eprint/23798
ISSN: 0921-5093
PURE UUID: bc7b3369-bb49-4d36-8f36-f6b07a0d2395
ORCID for Terence G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 31 Mar 2006
Last modified: 10 Dec 2019 01:47

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