| Abstract Scope |
High-temperature materials are the pillars of modern gas turbine technologies for aerospace and electric power generation. However, the operating temperature of gas turbines is limited by the temperature capability of the metal alloys. The state-of-the-art nickel-based superalloys can operate continuously at temperatures up to 1100 C. Recently ARPA-E of US DOE initiated a program, namely the ultra-high temperature impervious materials advancing turbine efficiency (ULTIMATE) program, to develop ultra-high temperature materials that can operate continuously at 1300 C. Such ultrahigh-temperature alloys will be based on refractory metals. The successful development of such ultrahigh temperature must meet high-temperature strength, oxidation corrosion resistance, and manufacturability requirements. This is possible today by the convergence of the tremendous power of today’s computational alloy design, the vast untapped space of refractory high entropy alloys, and the unlimited potential of additive manufacturing. This presentation will discuss the scientific rationale and the synopsis of the ARPA-E ULTIMATE program. |