Development of a low melting point white cast iron for use in composite alloy manufacture

Publication Type:
Journal Article
Materials Forum, 2007, 31 pp. 16 - 23
Issue Date:
Full metadata record
White cast irons are used extensively throughout the mining industry for their wear resistant properties. Since their original development in the early 1900's researchers have continued to develop a range of white cast iron compositions with varying degrees of hardness, toughness or corrosion resistance. This study focuses on the development of a low melting point white cast iron which has applications in the composite alloy manufacturing industry. The compositional range for the study was developed through analysis of the iron-chromium-carbon phase diagram. Experimental work has included the casting and thermal analysis of a range of alloy compositions. The microstructures of the alloys have been studied to determine the relationship with the phase diagram, and a comparison of the experimental data with computer generated phase diagrams is presented. The results of this study permitted an alloy white cast iron to be produced with a melting point of approximately 1200°C. The experimentally derived thermal data for the liquidus and solidus temperatures are generally lower compared to the predicted data based on CALPHAD simulations. © Institute of Materials Engineering Australasia.
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