Numerical Investigation of Plastic Strain Homogeneity During Equal-Channel Angular Pressing of a Cu-Zr Alloy
Numerical Investigation of Plastic Strain Homogeneity During Equal-Channel Angular Pressing of a Cu-Zr Alloy
A three-dimensional finite element method (3D FEM) simulation was carried out using ABAQUS/Explicit software to simulate multi-pass processing by equal-channel angular pressing (ECAP) of a circular cross-sectional workpiece of a Cu-Zr alloy. The effective plastic strain distri-bution, the strain homogeneity and the occurrence of a steady-state zone in the workpiece were investigated during ECAP processing for up to eight passes. The simulation results show that a strain inhomogeneity was developed in ECAP after one pass due to the formation of a corner gap in the outer corner of the die. The calculations show that the average effective plastic strain and the degree of homogeneity both increase with the number of ECAP passes. Based on the coefficient of variance, a steady-state zone was identified in the middle section of the ECAP workpiece, and this was numerically evaluated as extending over a length of approximately 40 mm along the longitudinal axis for the Cu-Zr alloy.
3D FEM, ECAP, copper alloy, strain homogeneity
Wongsa-Ngam, Jittraporn
3a196159-d8e5-4658-a47b-a6f6c5a7dcc7
Noraphaiphipaksa, Nitikorn
8b8d0727-27da-432b-8065-44bcd6e6a65e
Kanchanomai, Chaosuan
e10a6812-41e3-49b6-967b-9d3962c13d77
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
3 December 2021
Wongsa-Ngam, Jittraporn
3a196159-d8e5-4658-a47b-a6f6c5a7dcc7
Noraphaiphipaksa, Nitikorn
8b8d0727-27da-432b-8065-44bcd6e6a65e
Kanchanomai, Chaosuan
e10a6812-41e3-49b6-967b-9d3962c13d77
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Wongsa-Ngam, Jittraporn, Noraphaiphipaksa, Nitikorn, Kanchanomai, Chaosuan and Langdon, Terence G
(2021)
Numerical Investigation of Plastic Strain Homogeneity During Equal-Channel Angular Pressing of a Cu-Zr Alloy.
Crystals, 11 (12), [1505].
(doi:10.3390/cryst11121505).
Abstract
A three-dimensional finite element method (3D FEM) simulation was carried out using ABAQUS/Explicit software to simulate multi-pass processing by equal-channel angular pressing (ECAP) of a circular cross-sectional workpiece of a Cu-Zr alloy. The effective plastic strain distri-bution, the strain homogeneity and the occurrence of a steady-state zone in the workpiece were investigated during ECAP processing for up to eight passes. The simulation results show that a strain inhomogeneity was developed in ECAP after one pass due to the formation of a corner gap in the outer corner of the die. The calculations show that the average effective plastic strain and the degree of homogeneity both increase with the number of ECAP passes. Based on the coefficient of variance, a steady-state zone was identified in the middle section of the ECAP workpiece, and this was numerically evaluated as extending over a length of approximately 40 mm along the longitudinal axis for the Cu-Zr alloy.
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Accepted/In Press date: 1 December 2021
Published date: 3 December 2021
Additional Information:
Funding Information:
Funding: The work was supported by the European Research Council under ERC Grant Agreement No. 267464-SPDMETALS, the KMITL Research Fund under Project Number KREF01590 and Thammasat Postdoctoral Fellowship under Project Number TUPD12/2564.
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords:
3D FEM, ECAP, copper alloy, strain homogeneity
Identifiers
Local EPrints ID: 452840
URI: http://eprints.soton.ac.uk/id/eprint/452840
ISSN: 2073-4352
PURE UUID: b9465aed-aef7-4a3c-a47d-01d16407d345
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Date deposited: 21 Dec 2021 17:53
Last modified: 17 Mar 2024 02:55
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Author:
Jittraporn Wongsa-Ngam
Author:
Nitikorn Noraphaiphipaksa
Author:
Chaosuan Kanchanomai
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