Russian Journal of Non-Ferrous Metals

, Volume 58, Issue 6, pp 632–638 | Cite as

A Study of Plastic Deformation Behavior of AA1050 Aluminum Alloy during Pure Shear Extrusion with Back Pressure

Pressure Treatment of Metals

Abstract

In the present study, the effects of back pressure on the filling fraction of die and the effective strain distribution throughout severely deformed material during pure shear extrusion, a novel severe plastic deformation process, are investigated by finite element analysis. A pure shear extrusion process found in the literature is employed and the predicted forming load is compared with experiments. A good agreement is observed between the results of the simulation with Coulomb friction of 0.12 and experiments. Various back pressures are applied to plunger at the exit channel of the die, and their influence on the filling fraction of the die and the effective strain in severely deformed billets are studied, indicating that the homogeneity of the effective strain on the cross-section of the deformed billet is decreased slightly. It is also found that the filling fraction of the die exit channel as well as average strain on the cross-section of the billet are increased.

Keywords

pure shear extrusion finite element method strain homogeneity back pressure filling fraction 

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Copyright information

© Allerton Press, Inc. 2017

Authors and Affiliations

  1. 1.Graduate School of Mechanical and Aerospace EngineeringGyeongsang National UniversityJinju-CityRepublic of Korea
  2. 2.Engineering Research Institute, School of Mechanical and Aerospace EngineeringGyeongsang National UniversityJinju-CityRepublic of Korea

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