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

本研究的目的是基于Mn-Al-Si概念，研究表面形貌对高合金奥氏体TRIP/TdR钢力学行为的影响。为此，通过光学和电子显微镜以及X射线衍射，对CRC 926内通过微观和宏观加工制造的特定表面形貌进行表征。他们的准静态和循环性能的影响进行评估，在SEM原位机械测试，以及通过疲劳测试与随后的近表面微观结构的非原位分析。随后，将与子项目C02合作制造和测试第一批高性能和耐磨链销原型。

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.