Influence of α layers at β grain boundaries on mechanical properties of Ti-alloys

Tensile and fatigue properties were evaluated for two β-processed Ti-alloys, β-Cez and Ti-6246, both with a pancake shaped grain structure. Tests were performed in L- and ST-direction and under various inclined angles. The orientation dependence observed for tensile ductility and HCF strength will be associated with an influence of the soft α layer regions along the β grain boundaries.