The morphology of cavitation damage of heat-treated medium carbon steel

Abstract

In this paper the morphology of the cavitation damage to heat-treated medium carbon steel was analyzed. The experiments were conducted using a modified vibratory cavitation test set up. The erosion rates were measured by an analytical method. The morphology of the cavitation damage was studied by the scanning electron microscopy and optical microscopy techniques. The present work was aimed at understanding the cavitation erosion behavior of heat-treated medium carbon steel under laboratory conditions. The results indicate that the heat-treated medium carbon steel is not to be recommended for the production of hydraulic machinery parts exposed to high hydrodynamic intensity.

U radu je analizirana morfologija kavitacionog oštećenja srednje-ugljeničnog čelika u poboljšanom stanju. Eksperiment je vođen primenom modificirane ultrazvučne metode. Stepen kavitacionog oštećenja je meren klasičnom analitičkom hemijskom metodom. Morfologija oštećenja nastalog dejstvom kavitacije praćena je skening elektronskim mikroskopom i svetlosnim mikroskopom. Cilj ovog rada je bilo tumačenje kavitacionog erozionog ponašanja srednje-ugljeničnog čelika u poboljšanom stanju u laboratorijskim uslovima. Dobijeni rezultati pokazali su da primena srednje-ugljeničnog čelika u poboljšanom stanju nije preporučljiva u proizvodnji elemenata hidrauličnih mašina izloženih ekstremnim hidrauličnim uslovima.