Advanced superalloys and tailored microstructures for integrally cast turbine wheels

摘要

The life cycle costs of the Rols-Royce COrporation Model 250 small turbine engines have not kept pace with those of international competitors. A significant contributor to this deficiency was the dated technology used in turbine section materials and manufacturing processes. The Advanced Materials for Small Turbine Engines (AMSTE) team, consisting of Rols-Corporation, Furdue Research Foundation, and the National Aeronautics and Space Administration (NASA) Blenn Research Center, was formed to significantly advanced the state of the art in the manufacture of integrally bladed turbine wheels. The team was awarded a program by NASA for the Aerospace Industry Technology Program (AITP) designed to hel maintain competitiveness in the production of samll turboshaft engines and demonstrate an advanced material system for other gas turine aerosace/surface applications.