The authors thank the German Research Foundation (Deutsche Forschungsgemeinschaft) for the financial support within the graduate program 814.
Influence of γ-α′-Phase Transformation in Metastable Austenitic Steels on the Mechanical Behavior During Tensile and Fatigue Loading at Ambient and Lower Temperatures†
Article first published online: 16 MAY 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Engineering Materials
Volume 14, Issue 10, pages 853–858, October 2012
How to Cite
Hahnenberger, F., Smaga, M. and Eifler, D. (2012), Influence of γ-α′-Phase Transformation in Metastable Austenitic Steels on the Mechanical Behavior During Tensile and Fatigue Loading at Ambient and Lower Temperatures. Adv. Eng. Mater., 14: 853–858. doi: 10.1002/adem.201100341
- Issue published online: 5 OCT 2012
- Article first published online: 16 MAY 2012
- Manuscript Accepted: 12 APR 2012
- Manuscript Received: 14 DEC 2011
- German Research Foundation (Deutsche Forschungsgemeinschaft)
The present investigation is concerned with the three metastable austenitic steels AISI 304 (X5CrNi1810), 321 (X6CrNiTi1810), and 348 (X10CrNiNb189). In the temperature range −60 °C ≤ T ≤ 25 °C tensile and fatigue tests were performed to characterize the mechanical and phase transformation behavior using stress-elongation, stress–strain hysteresis, and magnetic measurements. The mechanical properties are significantly influenced by the temperature dependent deformation induced phase transformation from austenite to α′-martensite which are combined with pronounced hardening processes. Furthermore microhardness measurements after fracture could be correlated with the results of the fatigue tests.