Abstract
Abstract The correlation of microstructure with cavitation erosion (CE) behaviour of Ni-Al bronze in simulated seawater has been clarified. It is found that there exist a large number of dislocations and deformation twins in the α-phases after CE damage, and these dislocations and deformation twins can prevent the fatigue cracks from nucleating and expansion, thereby making Ni-Al bronze a superior CE resistance. Meanwhile, the small size of the α-phases improves the critical shear stress of dislocation movement, thus displaying good strengthening effect on this material. In addition, the microstructure evolution of Ni-Al bronze with different CE time as well as the synergistic effect between CE and corrosion in simulated seawater have also been studied.
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