Abstract Scope |
Expeditiously growing interests in refractory multi-principal element alloys (RMPEAs), due to their distinct combination of ambient- and elevated-temperature mechanical properties, thermal properties, and corrosion resistance for a wide range of applications, including in the aerospace sector, motivated us to analyze the literature data for the RMPEAs and identify competitors to benchmark superalloys at various temperature profiles for jet engines. We applied decision science-driven techniques, including multiple-attribute decision-making (MADM), synergistically with principal component analysis (PCA) and hierarchical clustering (HC). The ranks assigned by several MADMs, viz., CoCoSo, (combined compromise solution), MARCOS (measurement of alternatives and ranking according to compromise solution), MABAC (multi-attributive border approximation area comparison), ROVM (range of value method), etc., were consistent. The analyses identify potential competitors to the benchmark superalloys, e.g., MAR M 247, Haynes 230, 718, 718Plus, and Waspaloy, and provide possible directions for the design and improvement of RMPEAs. |