Microstructure and cavitation erosion behavior in overlapping vs. substrate areas of WAAM NAB.

ABSTRACT: This study investigated the mechanism of influence of the microstructure of nickel-aluminum bronze (NAB) alloy prepared by wire-arc additive manufacturing (WAAM) on cavitation erosion (CE) and the synergistic effect of CE and corrosion. Microstructural analysis revealed that the earlier-deposited area in the overlapping area exhibited finer grain size (6.8 µm), higher β' phase content (34.6 %), and dominant κ_Ⅲ/κ_Ⅳ precipitates, while the substrate featured coarser grain size (13.6 µm) and lower β' phase content (23.2 %) featured coarser grain size (13.6 µm) and lower β' phase content (23.2 %). CE testing indicated that in synthetic seawater, the cumulative mass loss in the overlapping area (75.2 mg) is lower than that in the substrate (82.32 mg), but the initial mass l

SUBMITTER: Cai X 

PROVIDER: S-EPMC12504981 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature