What materials are used for turbine blades and what properties are required?

Turbine blade materials must withstand extreme temperatures (1000-1200C metal temperature), stress, and oxidation. Materials include: Nickel-based superalloys (Inconel, Rene, CMSX series) with gamma-prime strengthening, Single-crystal alloys eliminating grain boundary weaknesses for highest temperature capability, and Emerging ceramic matrix composites (CMCs) for even higher temperatures. Key properties: High-temperature strength and creep resistance, Oxidation and hot corrosion resistance, Thermal fatigue resistance, and Stability over long service life. Thermal barrier coatings (TBC) of yttria-stabilized zirconia add 100-150K capability. Material development is a key enabler for engine efficiency improvements.