Finite element analysis of deformation behavior in continuous ECAP process

Deformation behavior of the pure copper rod in the continuous ECAP process is analyzed by using DEFORM-2D. The effect of die angle ϕ and the friction between the die channels and the specimen on the stress and strain distribution, strain homogeneity, the feature of shear deformation and the torque w...

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Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2009-08, Vol.516 (1), p.111-118
Main Authors: Wei, Wei, Zhang, Wei, Wei, Kun Xia, Zhong, Yi, Cheng, Gang, Hu, Jing
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Equal channel angular pressing
Exact sciences and technology
Finite element analysis
Materials science
Other heat and thermomechanical treatments
Physics
Severe plastic deformation
Shear deformation
Treatment of materials and its effects on microstructure and properties
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cited_by cdi_FETCH-LOGICAL-c427t-9e93c6b48781c8c7ecf41c44de590f6eb0a0efaf1c790120aae8b3c850cb5a473
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container_title Materials science & engineering. A, Structural materials : properties, microstructure and processing
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creator Wei, Wei
Zhang, Wei
Wei, Kun Xia
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Cheng, Gang
Hu, Jing
description Deformation behavior of the pure copper rod in the continuous ECAP process is analyzed by using DEFORM-2D. The effect of die angle ϕ and the friction between the die channels and the specimen on the stress and strain distribution, strain homogeneity, the feature of shear deformation and the torque was investigated. In the continuous ECAP, shear deformation exists in the die angle ranged from 90° to 120°, however, the pattern and extent of shear deformation are different to that in Conform and ECAP. The effective strain is uniform in most parts of the workpiece. As ϕ increases, the corner gap becomes smaller, and the strain distribution is less homogenous. The extent of shear deformation, homogeneity of the stress and strain distribution can be improved by the friction on the interface of the die and workpiece but the maximum torque value increases. The assumed shear deformation is further divided into three stages, which can be well explained by the torque–time curves and the effective stress fields. The results indicate that the continuous ECAP process is a promising approach for producing ultrafine-grained (UFG) sheet, bar, rod and wire.
doi_str_mv 10.1016/j.msea.2009.03.001
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subjects Cross-disciplinary physics: materials science
rheology
Equal channel angular pressing
Exact sciences and technology
Finite element analysis
Materials science
Other heat and thermomechanical treatments
Physics
Severe plastic deformation
Shear deformation
Treatment of materials and its effects on microstructure and properties
title Finite element analysis of deformation behavior in continuous ECAP process
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