Abstract
Purpose: capability check of removal the contact-precipitated iron from the samples surfaces of titanium alloy VT6ch after vibro-impact strengthening by steel balls using vibro-abrasive processing by ceramic granules.
Design/methodology/approach: the theory of resiliency and plasticity, of contact destruction mechanics positions are used in the article. Experimental researches were based on experiment planning theory, the data statistical processing methods, facilities of the computing engineering and software. The iron tracks presence on the samples surface was controlled by visual examination of the imposed on it filtration paper, moistened in solution, containing potassium ferricyanide. The iron tracks removal from the strengthened samples surface was conducted by two methods: by etching in nitric acid solution and vibro-abrasive processing by ceramic granules. The samples surface layer was corrosion resistance tested using the climate chamber; the surfaces were visually inspected after the test. The samples surface quantitative chemical composition was determined. The samples surface roughness was contact measured.
Findings: surface dressing by ceramic granules RXX 15/15 using process equipment Rosler during 80 и 160 min, as well as etching in nitric acid allows almost complete removal of iron embedded after vibro-impact surface strengthening. Single iron inclusions remain during any type of processing. According to the results of climatic tests of samples (strengthened, strengthened and scraped, strengthened and etched), there were no obvious signs of iron corrosion products.
Originality/value: preliminary studies of the effect of scraping on fatigue resistance have shown that vibro-abrasive processing (scraping) of strengthened samples improves fatigue resistance.
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The study was carried out using the equipment of the Center for Collective Use “New Materials and Technologies” on the basis of KnASU.
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Altukhova, V.V., Krupskiy, R.F., Krivenok, A.A., Kravchenko, E.G. (2021). Vibro-Abrasive Engineering of the High-Resource Titanium Aircraft Parts Surface. In: Shakirova, O.G., Bashkov, O.V., Khusainov, A.A. (eds) Current Problems and Ways of Industry Development: Equipment and Technologies. Lecture Notes in Networks and Systems, vol 200. Springer, Cham. https://doi.org/10.1007/978-3-030-69421-0_4
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