Original scientific paper

Effect of carbon addition on functional and mechnical properties of the Ni₃Al phase

E. Olejnik ; AGH - University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland
A. Janas ; AGH - University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland
B. Grabowska ; AGH - University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland
M. Kawalec ; AGH - University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland

Abstract

Casting technology was applied and research was carried out on two alloys based on the Ni3Al phase with variable carbon content of 0,2 and 1,25 wt. % C, respectively. Resistance to abrasive wear, friction coefficient and Vickers microhardness were determined. Metallographic studies were conducted to examine the macrostructure and microstructure of the investigated alloys. An increase in resistance to abrasive wear and microhardness of alloy containing 1,25 wt. % C was observed. The coefficient of friction was determined, which for the alloy with increased carbon content was much lower than for the alloy containing 0,2 wt. % C. Structural changes were reported to have some effect on functional and mechanical properties of the examined alloys.

Keywords

Ni₃Al; carbon; wear rate; friction coefficient; microhardness

Hrčak ID:

82902

URI

https://hrcak.srce.hr/82902

Publication date:

1.10.2012.

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