Evolution of Bimodal Microstructure and High-Temperature Wear Resistance of Al-Cu-Ni Alloys

Five decades of research on the development of eutectic as engineering materials

“…10a). Maity et al studied the phase evolution in the cast alloys with a slightly higher Cu and Ni [55]. In these alloys, both α-Al and vacancy ordered phase Al 3 Ni 2 coexists as a primary phase with a fine lamellar eutectic between α-Al and Al 2 Cu.…”

“…In contrast, the unimodal binary eutectics such as Al-Al 2 Cu, Al-Al 3 Ni, and Al-Si and ternary eutectics Al-Ni-Fe, Al-Cu-Si showed either high strength or better compressive plasticity and hence, did not possess a superior strength-ductility trade-off [1,22,27,36,51]. The addition of transition elements such as V, Ti, Sc, Zr was attempted in recent times to improve the mechanical properties of Al eutectic alloys [55][56][57]60,64,67,68]. The effects were more pronounced at higher temperatures (<473 K).…”