High-temperature sliding wear resistance of a ductile metal-toughened Cr₁₃Ni₅Si₂ ternary metal silicide alloy

High-temperature metallic sliding wear resistance and mechanisms of a Cr₁₃Ni₅Si₂ ternary metal silicide alloy toughened by small amount of interdendritic nickel-based solid solution (γ) were studied as a function of wear test temperature. The γ-toughened Cr₁₃Ni₅Si₂ alloy has excellent wear resistance under high-temperature sliding wear test conditions. Wear volume loss of the Cr₁₃Ni₅Si₂ alloy was very low and was even slightly decreased with increasing test temperature. The ductile interdendritic γ-phase played a positive role in reducing the wear volume loss of the γ-toughened Cr₁₃Ni₅Si₂ alloy by prohibiting crack propagation and preventing pulling-out of the broken Cr₁₃Ni₅Si₂ fragments from the worn surface.