Strain rate and temperature effects on stress-strain behaviour of cast high alloyed CrMnNi-steel

L. Krüger; S. Wolf; U. Martin; P. Scheller; A. Jahn; A. Weiß

doi:doi:10.1051/dymat/2009149

All issues

Volume 2 (2009)

10.1051/dymat/2009149

Abstract

Issue		DYMAT 2009 Volume 2, 2009 DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading


Page(s)		1069 - 1074
Section		Micro-Structural Effects
DOI		https://doi.org/10.1051/dymat/2009149
Published online		15 September 2009

DYMAT 2009 (2009) 1069-1074
DOI: 10.1051/dymat/2009149

Strain rate and temperature effects on stress-strain behaviour of cast high alloyed CrMnNi-steel

L. Krüger¹, S. Wolf¹, U. Martin², P. Scheller³, A. Jahn³ and A. Weiß³

¹ Institute of Materials Engineering, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany
² Institute of Materials Science, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany
³ Institute of Iron and Steel Technology, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany

Published online: 15 September 2009

Abstract
Cast high alloyed metastable austenitic CrMnNi-TRIP-steels are rather novel corrosion resistant materials and still under development. Due to the transformation-induced plasticity effect (TRIP) high stresses combined with high ductility can be achieved up to high strain rates of 10³ 1/s. Deformation temperatures and strain rate influence the martensitic phase transformation rate during plastic deformation and have a strong effect on achieved strength and failure properties. Despite the cast coarse grained microstructure, a high energy consumption up to crash relevant strain rates is reached due to the pronounced TRIP-effect.