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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60461373:22310/25:43932024

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Materials Research and Technology

ISSN

2238-7854

e-ISSN

2214-0697

Svazek periodika

35

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

7371-7383

Kód UT WoS článku

001447170500001

EID výsledku v databázi Scopus

2-s2.0-86000566201