Nanocrystalline AlNiCoFeCrTi high-entropy alloy resulted from mechanical alloying and annealing

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dc.contributor.authorYurkova, Alexandra
dc.contributor.authorChernyavsky, Vadym
dc.contributor.authorHushchyk, Dmytro
dc.contributor.authorBilyk, Igor
dc.contributor.authorNakonechnyi, Sergey
dc.date.accessioned2021-08-10T15:51:28Z
dc.date.available2021-08-10T15:51:28Z
dc.date.issued2019
dc.descriptionThis is a post-peer-review, pre-copyedit version of an article published in 2019 IEEE 9th International Conference Nanomaterials: Applications & Properties (NAP). The final authenticated version is available online at: https://doi.org/10.1109/NAP47236.2019.216967en
dc.description.abstractenThis study reports the structural evolution of multi-component AlNiCoFeCrTi high-entropy alloy from elemental materials to nanocrystalline metastable solid solution during mechanical alloying (MA), and further, to equilibrium phases during subsequent thermal annealing. It was justified experimentally that shot-time mechanical milling of Al-Ni-Co-Fe-Cr-Ti powder mixture during 3 hours resulted in a single-phase nanocrystalline high-entropy alloy (HEA) with a structure of bcc solid solution. During thermal annealing of the bcc solid solution phase transformation take place, and grain growth of equilibrium phases occur. The phase composition of as-MA alloy transforms to fcc and bcc solid solutions with TiC precipitations’ when the MA powder was annealed at 1200 °C for 1 h. X-ray diffraction and electron microscopy data show that the nanocrystalline powder microstructure is retained in the alloy with no grain growth. The AlNiCoFeCrTi HEA exhibit 7.1 GPa and 9.2±0.3 GPa in Vickers hardness after mechanical alloying and after thermal annealing, respectively.en
dc.description.sponsorshipMinistry of Education and Science of Ukraine [project # 2106]en
dc.event.date2019-09-15en
dc.event.placeOdesa, Ukraineen
dc.format.pagerangePp. 01TFC15-1–01TFC15-5en
dc.identifier.citationNanocrystalline AlNiCoFeCrTi high-entropy alloy resulted from mechanical alloying and annealing / Alexandra Yurkova, Vadym Chernyavsky, Dmytro Hushchyk, Igor Bilyk, Nakonechnyi Sergey // Proceedings of the 2019 IEEE 9th International Conference on Nanomaterials: Applications & Properties (NAP-2019), Odesa, Ukraine, September 15–20, 2019. – Sumy : Sumy State University , 2019. – Part 1. – Pp. 01TFC15-1–01TFC15-5.en
dc.identifier.doihttps://doi.org/10.1109/NAP47236.2019.216967
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/43115
dc.language.isoenen
dc.publisherSumy State Universityen
dc.publisher.placeSumyen
dc.sourceProceedings of the 2019 IEEE 9th International Conference on Nanomaterials: Applications & Properties (NAP-2019), Odesa, Ukraine, September 15–20, 2019, Part 1en
dc.subjecthigh-entropy alloyen
dc.subjectmechanical alloyingen
dc.subjectnanostructureen
dc.subjectannealingen
dc.subjectphase transformationen
dc.subjectmicrohardnessen
dc.titleNanocrystalline AlNiCoFeCrTi high-entropy alloy resulted from mechanical alloying and annealingen
dc.title.event2019 IEEE 9th International Conference Nanomaterials: Applications & Properties (NAP-2019)en
dc.typeArticleen

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