Conclusions
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1.
Under conditions of friction and wear of an equilibrium solid solution one observes solution of anodic components of the alloy in the lubricant and formation on the contact surface of a plasticized film of pure copper with a specific structure—low dislocation density and high density of vacancies. In this case the wear resistance increases sharply—to the point where wear is practically absent.
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2.
During friction of unstable alloys and alloys susceptible to phase transformations the conditions are favorable for the formation of intermetallic compounds in local areas, which changes in principle the mechanism of the contact interaction—the wear resistance decreases considerably.
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3.
Equilibrium and a single phase are the basic conditions for high wear resistance of copper-tin alloys during friction in surface-active lubricants.
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Additional information
Institute of Machine Science. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 19–22, December, 1979.
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Rybakova, L.M., Kuksenova, L.I. & Samylkin, V.M. Effect of diffusional redistribution of alloying elements on the wear resistance of copper alloys. Met Sci Heat Treat 21, 916–919 (1979). https://doi.org/10.1007/BF00706626
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DOI: https://doi.org/10.1007/BF00706626