The aim of the work was to determine the microstructure effect on the tribological properties of the Monel K-500 alloy. The supersaturation temperature of 1150 °C was selected in such a way so that it would exceed the solution temperature of the carbides present in the Monel K-500 alloy by less than 10 °C. For the annealing temperature assumed in this way, the annealing time was assumed to be 1 h, 2 h and 4 h. Ageing at the temperature of 595 °C for 8 h was also performed, followed by cooling at the rate of 0.2 °C / min down to the temperature of 480 °C. Further cooling was continued in air. The evaluation of the test results was based on hardness measurements, a friction test as well as a stereological evaluation of the grain. It was stated that the hardness is not a factor which determines the tribological wear resistance of the Monel K-500 alloy. The deciding factor for the tribological wear resistance is the dominant wear mechanisms. The Monel K-500 alloy exhibits a higher wear resistance in the supersaturated state than the aged state after supersaturation. The grain growth seems to result in a reduction of wear and an increase of the friction coefficient in the case of samples aged after supersaturation.Keywords: Nickel alloy, Monel K-500, wear, microstructure, grain size
© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.