Super-Solidus Hot Isostatic Pressing Heat Treatments for Advanced Single Crystal Ni-Base Superalloys

Super-solidus hot isostatic pressing (SSHIP) heat treatment has been developed and applied to CMSX-10 K, a third-generation Ni-base single crystal superalloy. This innovative approach aims to reduce the total time required for solution heat treatment while enhancing mechanical properties compared to conventional routes. SSHIP is suitable for all types of Ni-base single crystal superalloys, particularly those with high refractory element content and a significant volume fraction of eutectic microstructure in the as-cast state.