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Cavity erosion is a complex and localized phenomenon involving mechanical, chemical and metallurgical parameters. The development of new materials depends on understanding the relationship between microstructure and cavity erosion. This paper investigates the role played by the chemical composition and microstructure on the erosion behavior through the cavity of high alloy steel 25Cr – 20Ni cast in parts. The cavitation tests were performed using an ultrasonic vibrator at a frequency of 20 kHz and amplitude oscillation amplitude of 50 µm. The surface of the eroded samples was examined under an optical microscope and an electron scanning microscope. It’s performance is compared to that of cast martensitic stainless steel, GX10Cr13
Keywords: high Cr–Ni cast stainless steel, cavitation erosion, microstructure© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.