Elemental Additions to Enhance Precipitate Formation in Superalloys

Recent discoveries of cobalt-based superalloys has sparked interest in finding new ternary alloy systems that exhibit the essential L1₂ precipitate hardening mechanism. The higher operating temperature of cobalt-based alloys translates to increases in fuel efficiency for energy applications. One recent high-throughput search identified six new potential superalloys, two of which were confirmed to be at least metastable. Using the Moment Tensor Potential (MTP) framework, we explore fourth element additions to these new ternary systems. Several elements lower the formation enthalpy of the L1₂ phase, possibly enhancing its stability. These elemental additions offer a promising direction in designing new superalloys.