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MM: Fachverband Metall- und Materialphysik

MM 19: Poster Session

MM 19.47: Poster

Dienstag, 10. März 2026, 18:00–20:00, P5

Heat-treatment dependent hydrogen embrittlement behaviour of additively manufactured 316L — •Kai Lagemann, Gabriele Palazzo, Stefan Wagner, and Astrid Pundt — Institute for Applied Materials, Karlsruhe Institute of Technology, Karlsruhe, Germany

This study investigates the mechanical behaviour of additively manufactured austenitic stainless steel 316L (AM316L) for different post-processing heat treatments and its susceptibility to hydrogen embrittlement. Specimens were produced in the as-built (AB) condition and after heat treatments at 400 °C, 650 °C, 900 °C, and 1050 °C. Comprehensive microstructural characterization and tensile testing were performed to evaluate the correlation between heat-treatment-induced microstructural changes and mechanical properties. Particular this study focuses on assessing the influence of hydrogen on the fracture behaviour and embrittlement sensitivity of the differently heat-treated AM316L conditions. The findings provide an improved understanding of the interplay between additive manufacturing, microstructural evolution during heat treatment, and diffusion-based hydrogen-induced degradation mechanisms in AM316L [1]. [1] Kai Stefan Lagemann, Gabriele Palazzo, Tim Lucas Haag, Svetlana Korneychuk, Stefan Wagner, Christian Kübel and Astrid Pundt. Influence of Microstructure and Heat Treatment on Hydrogen Diffusion in Additively Manufactured 316L Stainless Steel. manuscript submitted, 2026.

Keywords: LPBF; heat-treatment; hydrogen embrittelment