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Title: Finite element analysis of plastic deformation in twist extrusion
Authors: Latypov M.I.
Alexandrov I.V.
Beygelzimer Y
Lee S.
Kim H.S.
Keywords: Twist extrusion
ultrafine/nanocrystalline microstructures
grain refinement
Issue Date: 2012
Publisher: Computational Materials Science
Series/Report no.: SCOPUS, IF 1.583;Computational Materials Science 60 (2012) 194–200
Abstract: Twist extrusion (TE), a promising severe plastic deformation (SPD) technique for grain refinement down to ultrafine/nanocrystalline microstructures, was introduced as an attempt to provide large plastic deformation conditions similar to those in high pressure torsion while allowing large workpiece dimensions for industrial applications. As a relatively new SPD technique, TE requires in-depth investigation of its plastic deformation characteristics. The present study investigates the influence of process parameters such as backward pressure and friction on the loading history, the stress/strain states, and the final shape of processed workpieces using the finite element method. The results provide a basis for reasonable decision of processing conditions and also identify prerequisites for studies in formability and fracture of metals subjected to TE.
Appears in Collections:Наукові публікації кафедри ОМД

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