Technical components are subject to growing demands in terms of durability and reliability. At the same time, they should be produced and designed sustainably. To meet these expectations, the development of thermochemical or thermomechanical processes is necessary. Titanium alloys, which have a comparatively high gas solubility, allow temporary hydrogen loading, often called thermohydrogen treatment (THT). Since THT causes lattice deformations and reduces the transus temperature, an adjustment of the microstructure is possible, which improves the mechanical properties compared to conventionally produced titanium alloy microstructures. Furthermore, THT is applicable to complex geometries that cannot be surface hardened using conventional mechanical surface treatment processes. The proposed research project aims at a local microstructure adaptation through targeted modification of the distribution and morphology of strength-increasing precipitates as well as the grain size depending on the distance to the surface (microstructure gradient), which should improve the fatigue properties of the material that are often relevant for the application.