Microstructure and dry sliding wear resistance of a Cr 13Ni 5Si 2 ternary metal silicide alloy

Abstract

Wear resistant Cr–Ni–Si metal silicide alloy with a microstructure primarily consisting of ternary metal silicide Cr 13Ni 5Si 2 primary dendrites was fabricated by the laser melting (Lasmelt) process using Cr–Ni–Si elemental powder blends as the precursor materials. Microstructure of the alloy was characterized by optical microscopy, scanning electron microscopy, X-ray diffraction and energy dispersive X-ray analysis. Wear resistance of the Cr 13Ni 5Si 2 alloy was evaluated under dry sliding wear test conditions at room temperature. Results indicate that the Cr 13Ni 5Si 2-based metal silicide alloy has excellent wear resistance under dry sliding wear test conditions.