Original scientific paper

Evaluation of producing technique factors affecting the matrix microstructure of as-cast ductile iron castings

S. Bockus ; Faculty of Mechanics and Mechatronics, Kaunas University of Technology, Kaunas, Lithuania
G. Zaldarys ; Faculty of Mechanics and Mechatronics, Kaunas University of Technology, Kaunas, Lithuania

Abstract

The objective of this paper was to investigate some important parameters related to ductile iron matrix microstructure. Ductile iron round bars of various diameters in order to achieve various cooling rates were obtained in different conditions. None heat treatment was used to obtain different pearlite contents in the microstructures. The correlation between kind of inoculants, specimens size, carbon equivalent, and matrix microstructure was investigated. The results demonstrated that the slow cooling rate, inoculants with rare earth elements, and relatively little residual magnesium content decreased the pearlite content. This study is of great importance for the development of new economical methods for production of ductile iron castings.

Keywords

ductile iron; inoculants; cooling rate; metallic matrix

Hrčak ID:

60844

URI

https://hrcak.srce.hr/60844

Publication date:

3.1.2011.

Article data in other languages: croatian

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