Original scientific paper

Determination of energy dissipation and process instability in various alloys on the basis of plastometric tests

T. Kubina ; VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
J. Kliber ; VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
L. Kunčická ; VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
M. Berková ; VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
J. Horsinka ; VŠB – Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Czech Republic
J. Bořuta ; Material & Metallurgical Research, Ltd., Ostrava, Czech Republic

Abstract

Energy dissipation and areas of process instability were investigated in two alloys. The first one was brass, the second one was the steel 9 Cr (P91). The tests were performed on torsion plastometer Setaram and on compression plastometer Gleeble. In the case of the steel 9 Cr identical heat was tested on both plastometers. The resulting 2D or 3D process maps indicate suitable areas of forming temperatures, magnitudes of deformation and strain rates.

Keywords

torsion test; compression test; plastometer; energy dissipation

Hrčak ID:

95685

URI

https://hrcak.srce.hr/95685

Publication date:

1.7.2013.

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