THE EFFECT OF THE MICROSTRUCTURE ON THE TRIBOLOGICAL PROPERTIES OF THE MONEL K-500 ALLOY

1 KRAWCZYK Janusz
Co-authors:
1 FROCISZ Łukasz 1 MATUSIEWICZ Piotr 1 MADEJ Marcin
Institution:
1 AGH University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Cracow, Poland, EU, jkrawcz@agh.edu.pl
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
1326-1334
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
303 views / 109 downloads
Abstract

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

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