Nanostructured AlNiCoFeCrTi high entropy coating performed by cold spray

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dc.contributor.authorHushchyk, D. V.
dc.contributor.authorYurkova, A. I.
dc.contributor.authorCherniavsky, V. V.
dc.contributor.authorBilyk, I. I.
dc.contributor.authorNakonechnyy, S. O.
dc.date.accessioned2021-06-23T11:14:42Z
dc.date.available2021-06-23T11:14:42Z
dc.date.issued2020-03
dc.description.abstractenIn this work, solid-state mechanical alloying (MA) and cold spraying (CS) processes were applied to fabricate powder AlNiCoFeCrTi high-entropy alloy (HEA) and then to produce HE coatings on steel substrate. Shot-time MA for 3 h has been employed to synthesize nanostructured equiatomic AlNiCoFeCrTi HEA of metastable supersaturated substitutional solid solution with bcc crystal structure. Although alloying is not complete at this shot milling time, it goes to completion during thermal annealing to achieve the alloy formation. XRD study on mechanically alloyed high-entropy AlNiCoFeCrTi alloy after thermal annealing at 1200 °C for 1 h revealed the formation of a three-phase structure consisting of ordered bcc phase with fine precipitates of intermetallic σ-phase (FeCr) and titanium carbide TiC. The powder agglomerates resulted from annealing were grinded in a ball mill for 1 h. Nanostructured disordered bcc solid solution, TiC and σ-phases are noticed after milling. Coatings of 450 μm in mean thickness were deposited by the CS process using an air like a working gas, temperature and pressure of 450 °C and 0.9 MPa, respectively. The experimental results confirm that CS process can be used to produce HE coatings with low porosity. As a low-temperature deposition process, CS completely retained the HEA phase composition and nanostructure in the coating without any phase transformation. The AlFeNiCoCrTi HE coatings exhibit 10.3±0.3 GPa in Vickers hardness.en
dc.format.pagerangePp. 4879–4890en
dc.identifier.citationNanostructured AlNiCoFeCrTi high entropy coating performed by cold spray / D. V. Hushchyk, A. I. Yurkova, V. V. Cherniavsky, I. I. Bilyk, S. O. Nakonechnyy // Applied Nanoscience. – 2020. – Vol. 10, Iss. 12. – Special Issue: NANO-2019 Conference. – Pp. 4879–4890.en
dc.identifier.doihttps://doi.org/10.1007/s13204-020-01364-4
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/41746
dc.language.isoenen
dc.publisherSpringer Natureen
dc.publisher.placeSwitzerlanden
dc.rights© 2020, King Abdulaziz City for Science and Technologyen
dc.sourceApplied Nanoscience, December 2020, Volume 10, Issue 12. Special Issue: NANO-2019 Conferenceen
dc.subjecthigh-entropy alloyen
dc.subjectmechanical alloyingen
dc.subjectnanostructureen
dc.subjectphase transformationen
dc.subjectcold sprayen
dc.subjectcoatingen
dc.titleNanostructured AlNiCoFeCrTi high entropy coating performed by cold sprayen
dc.typeArticleen

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