Defects studies of nickel aluminum bronze subjected to cavitation
Loading...
DOI
Date
2021-01-23
Journal Title
Journal ISSN
Volume Title
Publisher
APPLIED SURFACE SCIENCE
Abstract
A defects evolution below the surface in nickel aluminum bronze CuAl9Ni4Fe4 subjected
to cavitation under mild conditions with times up to 8h was studied using positron annihilation spectroscopy, mass loss measurements, and scanning electron and atomic force microscopies. The obtained results indicate two different stages of cavitation erosion. At the beginning of cavitation up to 6h in incubation period a removing of residual roughness and surface oxides was noted. Then, in the maximal erosion rate region, big vacancy clusters were recognized and its concentration drastically increase around 100 times in comparison with incubation period.
Description
Keywords
cavitation, positron annihilation, defects, cavitation erosion
Citation
K. Siemek, M.K. Eseev, P. Horodek, A.G. Kobets, I.V. Kuziv, Defects studies of nickel aluminum bronze subjected to cavitation, Applied Surface Science, Volume 546, 2021, 149107, https://doi.org/10.1016/j.apsusc.2021.149107.
Sponsorship:
Russian Foundation for Basic Research
Grantnumber:
No. 17-42-290138 "Dynamics of the development of defects in the structure of metals due to cavitation and corrosion effects in hydrodynamic media”