Noble metal high entropy alloys

A series of noble metal high entropy alloys with up to six constituent elements has been produced by casting. PtPdRhIrCuNi forms single-phase face-centered cubic solid solution, and its stability is confirmed by annealing experiments. This alloy deforms homogeneously to ~ 30% to a high ultimate compression strength of 1839 MPa. We discuss rules for the formation of single-phase solid solution.

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