from the conferences organized by TANGER Ltd.
In this paper is analyzed, through comparison, the cavitation erosion resistance of Duplex stainless steel, with a microstructure of approx. 50% austenite and 50% ferrite, solution annealed from 1060C with water cooling and finally nitrided at 520C for 40 hours in an ammonia environment. The cavitation test results were expressed by variation of mean depth erosion with the attack time and through the correlation between the attacked surface roughness and the erosion resistance.The microstructure investigations, with an optical microscope and electronic scanning microscope, explains the erosion mechanism of the surface layer, by starting and propagation of microcracks.
Keywords: cavitation erosion, stainless steel, gas nitriding© 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.