Formation of cavitation-induced nanosize precipitates on the eroded surface for Inconel 718 alloy

The cavitation erosion of Inconel 718 nickel-base alloy was investigated using an ultrasonic vibratory apparatus. The morphologies and microstructure evolution of the eroded surface were observed by scanning electron microscopy (SEM) and cold field emission scanning electron microscope (FESEM) and the cavitation-induced nanosize precipitates are found in the local zones of eroded surface.