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MM: Fachverband Metall- und Materialphysik

MM 25: Hydrogen in Metals V: H in Steels

MM 25.1: Topical Talk

Dienstag, 17. März 2015, 11:45–12:15, TC 006

An Industrial Perspective on Materials Design for Reduced Sensitivity to Hydrogen-Embrittlement — •Richard G. Thiessen and Oliver Rott — ThyssenKrupp Steel Europe AG, Duisburg, Germany

In order to improve efficiency, performance and safety in the automobile and transportation sector, manufacturers require materials with higher strengths while maintaining or improving their ductility. These demands are being met with extremely complex steels which exploit thermodynamically meta-stable phases to expand the property combinations. The resulting microstructures are challenging to characterize with even the most advanced techniques, let alone the investigation towards their interaction with hydrogen. Nevertheless, advances have been made in recent years in linking details in the microstructure to the behavior of hydrogen in these microstructures. The presented research aims to show some typical demands of modern advanced high strength steels, illustrate typical setups for the testing and measurement of hydrogen, and to correlate trends in the testing results with features in the microstructure. Furthermore, some suggestions and considerations will be given for the development of new steels with a reduced sensitivity to hydrogen-embrittlement.