Structurization of Multicomponent Ti–Cr–Fe–Ni–Cu Compacts during Sintering

Abstract

A heterophase alloy with a hardness of HRB = 103 and porosity of ~5% is produced by sintering the compacts made of multicomponent charge in the Ti–Cr–Fe–Ni–Cu system. It is demonstrated that, after sintering of the powder charge (prepared from the mixture of elemental powders), four phases with various types of lattice are formed: (i) two multicomponent phases with FCC lattice, (ii) one phase with BCC lattice based on the Cr–Fe system, and (iii) one phase with HCP lattice with crystallographic parameters based on titanium lattice. Distinct peaks of Cr₂Ti, Fe₂Ti, and Ni₃Ti intermetallides are seen in the phase composition of the alloy.