Al5Ni4Ir

Al5Ni4Ir is an intermetallic compound combining aluminum, nickel, and iridium—a research-phase material designed to achieve high-temperature strength and oxidation resistance by leveraging iridium's exceptional thermal stability. This ternary alloy targets applications where conventional superalloys face limitations, particularly in extreme-temperature environments where both lightweight aluminum benefit and iridium's refractory properties are valued; however, it remains largely experimental and would be selected only when superior high-temperature performance justifies the material and processing costs relative to established alternatives like Ni-based superalloys or tungsten-based composites.