Synthesis of Composite Layers on Cu–39Zn–1Pb Brass Using Ultrasonic Impact Treatment
A. P. Burmak1, B. N. Mordyuk2, S. M. Voloshko1, V. I. Zakiev3, V. V. Mohylko1
1National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine
2G. V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
3National Aviation University, 1 Lyubomyr Huzar Ave., UA-03058 Kyiv, Ukraine
Received: 29.04.2020. Download: PDF
The structure, phase composition and mechanical properties of composite coatings synthesized by ultrasonic impact treatment (UIT) of surface layers of two-phase Cu39Zn1Pb brass with the addition of Al2O3, SiC and β-Si3N4 powders are investigated. Due to the intense plastic deformation caused by the UIT, there is a partial grinding and incorporation of powders into the surface layer of brass. The proposed approach allows the synthesis of high strength composite coatings with a thickness of about 100 μm with a gradient structure. The maximum effect of hardening can be in 4 times higher in comparison with the initial state of brass under conditions of reinforcing with Al2O3 and SiC powders. The presence of a transition layer up to 150 μm thick confirms the high adhesion of the coating to the base material.
Key words: ultrasonic impact treatment, intensive plastic deformation, composite layer, microhardness, phase composition, surface morphology.
URL: http://mfint.imp.kiev.ua/en/abstract/v42/i09/1245.html
DOI: https://doi.org/10.15407/mfint.42.09.1245
PACS: 43.35.+d, 62.20.Qp, 81.40.Ef, 81.40.Lm, 81.65.-b, 83.10.Tv, 83.50.Uv
Citation: A. P. Burmak, B. N. Mordyuk, S. M. Voloshko, V. I. Zakiev, and V. V. Mohylko, Synthesis of Composite Layers on Cu–39Zn–1Pb Brass Using Ultrasonic Impact Treatment, Metallofiz. Noveishie Tekhnol., 42, No. 9: 1245—1264 (2020) (in Ukrainian)