Influence of the Surface State on Quasi-static and Cyclic Deformation and Damage Behavior of TRIP/TWIP Steels (B10)

• Subject Area: Metallurgical, Thermal and Thermomechanical Treatment of Materials
• Term: from 2015 to 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 172116086

The goal of this project is to investigate the influence of the surface morphology on the mechanical behavior of high-alloyed austenitic TRIP/TWIP steels based on the Mn-Al-Si concept. For this, specific surface morphologies manufactured within the CRC 926 by micro and macro machining is characterized by light and electron microscopy as well as X-ray diffraction. Their influence on the quasi-static and cyclic properties is evaluated by in situ-mechanical testing in the SEM as well as by fatigue tests with subsequent ex situ analysis of the near-surface microstructure. Later, first prototypes for high performance and wear resistant chain pins will be manufactured and tested in collaboration with subproject C02.

• 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; Dr.-Ing. Marek Smaga