Wear and Coefficient of Friction of a Supermodified Hypereutectic Aluminum–Silicon Alloy

• Published in: Technical physics Vol. 65; no. 12; pp. 1981 - 1986
• Main Authors: Osipov, V. N., Fadin, Yu. A., Nikanorov, S. P.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-12-2020; Springer
• Subjects: Classical and Continuum Physics; Physics; Physics and Astronomy; Silicon; Silicon alloys; Solid State; Specialty metals industry; Tribology; microstructure and mechanical properties; friction and wear
• ISSN: 1063-7842; 1090-6525
• DOI: 10.1134/S1063784220120191

The friction coefficient and the wear of a hypereutectic aluminum alloy with 15 wt % silicon and a supermodified eutectic structure without primary silicon crystals, obtained by directional crystallization at a solidification rate of 1 mm/s, are studied. It is shown that this alloy, which has high strength and ductility, has a lower friction coefficient and a higher wear resistance than the alloy with 20 wt % silicon. After modification with strontium, its tribological properties are superior to those of the hypereutectic commercial alloy.