Influence of Deformation Induced Martensite Formation on the Mechanical Properties of Metastable Austenite (B05)

• Subject Area: Metallurgical, Thermal and Thermomechanical Treatment of Materials
• Term: from 2011 to 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 172116086

The goal of this project is the improvement of the fatigue properties from the LCF to the VHCF regime of metastable austenitic Cr-Ni-steels due to deformation induced martensite formation as a consequence of defined surface machining processes. Besides surface hardening and residual stress state, microstructural parameters such as volume fraction, thickness, and distribution of the martensite are studied in detail. The microstructural parameters are quantified by light- and electron-microscopy as well as x-ray diffraction methods and their influence on fatigue and wear behaviour will be evaluated by electrical and magnetic in situ measurements.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 926: Microscale Morphology of Component Surfaces (MICOS)
• Applicant Institution: Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau
• Project Heads: Professor Dr.-Ing. Tilmann Beck; Professor Dr.-Ing. Dietmar Eifler, until 6/2015; Dr.-Ing. Marek Smaga