Title: Transformation plasticity at different phase transformation of a through hardening bearing steel

Authors: M. Dalgic, A. Irretier, H-W. Zoch, G. Lowisch

Addresses: IWT Stiftung Institut fur Werkstofftechnik, Paul-Feller-Str. 1, 28199 Bremen, Germany. ' IWT Stiftung Institut fur Werkstofftechnik, Paul-Feller-Str. 1, 28199 Bremen, Germany. ' IWT Stiftung Institut fur Werkstofftechnik, Badgasteiner Str. 3, 28359 Bremen, Germany. ' Universitat der Bundeswehr Munchen, 85577 Neubiberg, Germany

Abstract: A simulation of the heat treatment processes requires material data for the description of phase transformation. Those data refer not only to the transformation without external loads, since during the heat treatment transformation and thermally caused stresses develop, which affect the behaviour of the phase transformation. Interaction between phase transformation and external stress is the subject of these investigations. The investigations show the influence of constant tension and compression stresses on the transformation kinetics during the isothermal pearlitic and bainitic transformation and also the martensitic transformation of the bearing steel 100Cr6 (SAE 52100). This paper shows the transformation plasticity parameter K for different phases. Also, we introduce some models to describe the evolution of the transformation plasticity.

Keywords: bearing steel; transformation plasticity; pearlite; bainit; martensite; compression stress; modelling; parameter K; isothermal transformation; transformation kinetics; phase transformation; hardening steels; simulation; heat treatment.

DOI: 10.1504/IJMMP.2008.016943

International Journal of Microstructure and Materials Properties, 2008 Vol.3 No.1, pp.49 - 64

Available online: 31 Jan 2008 *

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