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:
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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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