INVESTIGATION OF THE POSSIBILITY OF INTRODUCING A LEAVING POWDER NICKEL ADDITIVE IN THE COMPOSITION OF THE MATRIX BASES OF Al AND Al-Cu

Abstract

One of the priority directions for improving the mechanical characteristics of aluminum composite alloys is the doping of matrix substrates by chemical elements capable of forming a second phase of increased strength. In traditional foundry technologies, as a rule, a ligature method of introducing additional components is implemented, which requires significant preliminary costs. In the present work, the possibility of introducing a nickel doping additive into the Al and Al-5% Cu matrix bases was investigated, and the possibility of introducing nickel into the melt both as a metal elemental powder and as a component of nickel oxide NiO was shown for the first time. The microscopic data, based on the local X-ray spectral analysis, confirm in both cases the production of the NiAl3 target phase, and the results of mechanical tests indicate hardening of the matrix alloys.