Strong elemental interaction enhances the thermal stability of coherent precipitation strengthened Cu–Ni–Al alloys

Coherent cuboidal precipitation of γ′ (Ni 3 Al) phases can significantly improve the high temperature properties of Cu–Ni–Al alloys, in which, substantial γ′ phases and a suitable lattice misfit degree between γ (Cu matrix) and γ′ phase ( δ γ-γ′ ) is necessary. However, the re-dissolution and grain boundary discontinuous precipitation would induce the degradation of heating resistance in the alloys with higher Cu content. Herein introducing Si...