Abstract
Ultrafine-grained structures (UFGS) are formed after severe plastic deformation (SPD) using the method of vibration-centrifugal hardening (VCH). This method provides greater depth due to the significant mass of the hardening tool. Under optimal conditions, vibration-centrifugal hardening during cold plastic deformation forms an ultrafine-grained ferritic structure with a grain size of 190 nm and high dislocation density and reaches microhardness of 8.9 GPa and a hardening depth of 7 mm on the 40Kh steel surface. The dependence of the corrosion and electrochemical characteristics as well as cavitation erosion damage resistance on the processing modes is shown. However, vibration-centrifugal hardening increases the cavitation erosion damage resistance by two times after stabilizing the destruction rate and by ten times at the incubation time.
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Kyryliv, Y., Kyryliv, V., Sas, N. (2019). Influence of Surface Ultrafine Grain Structure on Cavitation Erosion Damage Resistance. In: Fesenko, O., Yatsenko, L. (eds) Nanocomposites, Nanostructures, and Their Applications. NANO 2018. Springer Proceedings in Physics, vol 221. Springer, Cham. https://doi.org/10.1007/978-3-030-17759-1_7
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DOI: https://doi.org/10.1007/978-3-030-17759-1_7
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