Materials life in gas turbine engines depend on a complex combination of temperature-stress-environment- time variable fields. Research must take a fresh approach to establish a solid science base that will achieve the development of new materials and coatings that will enable greater engine efficiencies. Establishment of this science base requires a comprehensive, multidisciplinary approach that dissects, then later reconnects the critical drivers that influence the performance and life of materials and coatings at high and ultra-high (above 1500°C) temperatures. This approach couples materials science, interfacial science, materials chemistry, diffusion, corrosion and electrochemistry, fluid and solid mechanics, multi-scale thermodynamic and kinetic modeling and simulation, mathematics, and atomistic characterization.
Research should establish a basic understanding of performance-limiting mechanisms and control strategies to determine 3-dimensional, multi-scale effects of impurities, chemistries, and environments to maximize micro-mechanical interfacial strength, creep resistance, and thermal stability.