Abstract
Permanent moulded high chromium irons were prepared in the laboratory and erosion resistance of these castings were assessed using jet erosion test. The composition and heat treatment in permanent moulded casting is varied so as to obtain different carbide volume fraction and austenite levels in the microstructure. The erosion trends in high chromium irons are brought out with respect to angle of impact and velocity of impact. The permanent mould castings features fine carbides in a matrix of austenite and martensite. The finer carbides were found to impart considerable amount of erosion resistance. Higher carbon in these castings, promoted superior erosion resistance. However, these castings were seen to be prone to cracking during handling.
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