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MM: Fachverband Metall- und Materialphysik

MM 16: Poster Ia

MM 16.18: Poster

Montag, 18. März 2024, 18:30–20:30, Poster E

Microstructural Influencing Factors on Susceptibility of High Strength Steels against Hydrogen Embrittlement — Ingrit Sisilia Rosari Nurak¹ and •Michael Brilz² — ¹KIT, Karlsruhe (Gebäude 30.25, Raum 217) — ²MPA IfW Darmstadt

This thesis aims to conduct a materials science-based analysis of the relationship between microstructural, chemical, and fracture mechanical factors and the susceptibility to hydrogen embrittlement. For this purpose, metallographic and fracture mechanical examinations are done via VVT tests. To analyze the correlation between microstructural and fracture mechanical parameters, three materials with different microstructures are loaded with a constant HCl concentration and then strained, while for the investigation of the correlation between chemical and fracture mechanical parameters, identical samples are loaded with different HCl concentrations and then strained. An important microstructural influencing factor for quenched and tempered steels is the grain size of former austenite grains.

Keywords: Hydrogen in Materials; Embrittlement; Steel; Screw; Microstructure