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

• Main Authors: E. Olejnik, A. Janas, B. Grabowska, M. Kawalec
• Format: Article
• Language: English
• Published: Croatian Metallurgical Society 2012-10-01
• Series: Metalurgija
• Subjects: Ni₃Al; carbon; wear rate; friction coefficient; microhardness
• Online Access: http://hrcak.srce.hr/file/123367

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.