Intermetallic Matrix Superalloy for High Temperature Applications
Jake Beavers, Joe Schreiner, Dan Tanguay, David Doll, C Paul Qiao
L.E. Jones Company
Menominee, MI 49858
March 19th, 2026
Nickle- or Iron-based superalloys have been widely used for high-temperature structural applications such as jet engine components, industry gas turbines, and power plant equipment. Conventional superalloys primarily consist of Ni, Fe, Co, and Cr along with less amount of Nb, Ti, Al, and other alloying elements to form FCC matrix strengthened by γ’ phase. Intermetallic matrix superalloys, Jonesite 19 and Jonesite 21 possess high matrix strength without applying γ’ strengthening mechanism. Hence, intermetallic matrix superalloys exhibit a potential for improved capability of sustained high-temperature mechanical properties including greater thermal-shock-resistance to withstand rapid/irregular change and/or short-term overshoot of service temperature. The alloy design concept, materials properties, and manufacturing capability of these intermetallic matrix superalloys are discussed.