Studies of a wear resistant cast iron

Abstract

The objective of this investigation was to set down (on the base of the results obtained by the examination of white cast iron alloys with different content of the alloying elements) a correlation between chemical composition and microstructure, on one hand, and the properties relevant for this group of materials, i.e., abrasion wear resistance and fracture toughness, on the other. Experimental results indicate that the volume fracture of the carbide phase, carbide size and distribution, as well as the morphology of eutectic colonies, had an important influence on the wear resistance of white cast iron alloys under low-stress abrasion conditions, whereas fracture toughness was determined largely by the matrix microstructure.

Cilj ovog ispitivanja je bio da se (na osnovu dobijenih rezultata ispitivanja belih livenih gvozda sa različitim sadržajem legirajućih elemenata) uspostavi korelacija između hemijskog sastava i mikrostrukture, sa jedne strane, i osobina relevantnih za ovu vrstu materijala, tj., abrazivne otpornosti na habanje i žilavosti loma, sa drage strane. Eksperimentalni rezultati su pokazali da zapreminski udeo karbidne faze, veličina i raspodela karbida, kao i morfologija eutektičkih kolonija, imaju značajniji uticaj na otpornost na habanje legura belih livenih gvozda u uslovima malih naprezanja, dok je žilavost loma uglavnom determinisana mikrostrukturom osnove.