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DOI: 10.5445/IR/1000078783
DOI: 10.1016/j.proeng.2017.10.911

Modelling of High Pressure Torsion using FEM

Kulagin, Roman; Beygelzimer, Yan; Ivanisenko, Yulia; Mazilkin, Andrej; Hahn, Horst

High Pressure Torsion (HPT) is historically the first and is currently most common process of the severe plastic deformation (SPD). HPT is used for producing nanocrystalline structures in metals and alloys, as well as for cold welding of powders. The result of the HPT treatment is determined by the flow kinematics and the stress state of a material under deformation. P. Bridgman proposed a simple model for the initial assessment of shear strain in the sample during HPT. A number of recent investigations show that the true plastic flow during HPT can differ significantly from the simple model. We present in our report results of the FEM investigation of different types of flow during HPT. We propose a hypothesis that the vortex formation during the SPD process is caused by the local blocking of simple shear in a material under deformation.

Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 1877-7058
URN: urn:nbn:de:swb:90-787835
KITopen ID: 1000078783
HGF-Programm 43.22.01; LK 01
Erschienen in Procedia engineering
Band 207
Seiten 1445-1450
Bemerkung zur Veröffentlichung 12th International Conference on the Technology of Plasticity, ICTP 2017, Cambridge, United Kingdom, 17th - 22nd September 2017
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