Understanding the influence of Ti content on mechanically alloyed and sintered CoCrFeNiTix high entropy alloy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00383753" target="_blank" >RIV/68407700:21340/25:00383753 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22310/25:43932024
Result on the web
<a href="https://doi.org/10.1016/j.jmrt.2025.03.032" target="_blank" >https://doi.org/10.1016/j.jmrt.2025.03.032</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jmrt.2025.03.032" target="_blank" >10.1016/j.jmrt.2025.03.032</a>

Result language
angličtina
Original language name
Understanding the influence of Ti content on mechanically alloyed and sintered CoCrFeNiTix high entropy alloy
Original language description
The influence of a wide range of Ti content on the microstructure and properties of CoCrFeNiTix alloy prepared by mechanical alloying and spark plasma sintering was investigated. The content of Ti ranged from x = 0.44-2.15. A gradual change in the phase composition from sole FCC solid solution to fully intermetallic alloy, comprising (Co, Ti)-rich Laves and (Fe, Cr)-rich sigma phases, was observed during the increasing Ti content. The Ti showed major FCC solid solution strengthening at 10 at.% and secondary phase strengthening after the partial formation of intermetallic phases at the content of 15 at.%, reaching compressive yield strength of 2157 +/- 70 MPa and hardness of 968 +/- 10 HV1. Higher amounts of Ti led to further strengthening, increasing the hardness at the expense of ductility. The wear resistance followed the hardness and increased with Ti content, reaching 2.7 10- 5 mm3 N- 1 m- 1 for the CoCrFeNiTi2.15. The Ti content also affected the mechanism of wear shifting from mainly adhesive to abrasive wear, showing the presence of oxide debris and cracks, directly pointing to oxidation wear and thermal fatigue.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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