Conveners
Neutrons & Users 2a: Hydrogen.metal interactions
- Sebastian Muehlbauer
- Sebastian Busch (GEMS at MLZ, Helmholtz-Zentrum Hereon, Germany)
The importance of hydrogen embrittlement (HE) will increase with the energy transition, as hydrogen (H) is a promising fuel for CO₂-free power generation. In aviation, the replacement of kerosene by H requires turbine materials resistant to HE. Single-crystal (SX) superalloys are the material of choice for the hottest turbine sections, where the lattice parameter misfit between y and y' is a...
Alloy 718, a widely used Ni-based superalloy, is susceptible to hydrogen embrittlement. The γ' and γ'' precipitates and the δ phase significantly contribute to this embrittlement. To determine if other superalloys with different grain boundary pinning phases exhibit similar behavior, we investigated two γ' strengthened CoNiCr-based superalloys containing B2-structured β or D85-structured µ...
Hybrid implants that combine a permanent Ti-based component with a degradable Mg-part offer a promising strategy for advanced biomedical applications. This design combines the high strength and long-term stability of titanium with the temporary structural support, bone growth stimulation, and potential drug delivery functions of magnesium. During degradation, Mg releases hydrogen gas, which...
