Tribological tests of a hybrid composite (Al–12Si)–40Sn prepared by sintering mixtures of powders of silumin and pure tin were carried out using the pin-on-disk scheme. It has been established that an increase in the sliding velocity decreases the wear intensity of the composite upon dry friction, while an increase of the load leads to the opposite result. The data obtained indicate that the main contribution to the wear of the composite comes from the delamination of strongly deformed subsurface layers of the material. With an increase in the sliding velocity, the mechanism of the wear does not change, but, because of the heat-induced softening of the material, wear particles of the steel counterbody are pressed into it that “plate” the surface of the sample and reduce its wear intensity.
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The work was carried out within the framework of the basic research project of the Siberian Branch, Russian Academy of Sciences for 2017–2020 according to the program III.23.2.
Translated by S. Gorin
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Rusin, N.M., Skorentsev, A.L. Influence of the Sliding Velocity on the Wear Intensity of the Sintered Hybrid Composite (Al–12Si)–40Sn upon Dry Friction. Phys. Metals Metallogr. 121, 694–700 (2020). https://doi.org/10.1134/S0031918X2007008X
- aluminum hybrid composite
- powder metallurgy
- dry friction
- wear intensity