Superalloys
High-performance metallic alloys engineered to maintain exceptional mechanical strength, creep resistance, and oxidation resistance at high operational temperatures.
Governing formula
γ' Phase Precipitation: Ni₃(Al, Ti)
SI unit
High Temperature Strength (MPa at >800 °C)
In depth
Nickel-based superalloys achieve high-temperature creep resistance through coherent gamma-prime (γ') Ni₃Al precipitate hardening and single-crystal turbine blade casting, preventing grain boundary sliding.
Examples in the real world
Single-crystal nickel superalloy turbine blades operating in jet engine combustion chambers above 1,000 °C.