High-strength ultrafine-grained CoCrFeNiNb high-entropy alloy prepared by mechanical alloying: properties and strengthening mechanism
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00532147" target="_blank" >RIV/68378271:_____/20:00532147 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/60461373:22310/20:43920843 RIV/60461373:22810/20:43920843
Výsledek na webu
<a href="https://doi.org/10.1016/j.jallcom.2020.155308" target="_blank" >https://doi.org/10.1016/j.jallcom.2020.155308</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jallcom.2020.155308" target="_blank" >10.1016/j.jallcom.2020.155308</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
High-strength ultrafine-grained CoCrFeNiNb high-entropy alloy prepared by mechanical alloying: properties and strengthening mechanism
Popis výsledku v původním jazyce
An equiatomic CoCrFeNiNb alloy was prepared by conventional induction melting and by 8 h of mechanical alloying and compaction via spark plasma sintering. The alloy prepared via mechanical alloying showed a uniform ultrafine-grained microstructure composed of an FCC solid solution strengthened by HCP Laves phases. A detailed TEM inspection revealed the presence of nanocrystalline Cr2O3 particles at the triple junctions of the present grains as well as stacking faults and nanotwins found exclusively in the interior of the FCC solid solution grains. The mechanically alloyed alloy compacted at 1000 °C showed hardness of 798 ± 9 HV 30 and compressive ultimate strength of 2412 MPa. Those values were significantly higher than those obtained for the cast alloy. The strengthening effect of the individual structural contribution was calculated as well.n
Název v anglickém jazyce
High-strength ultrafine-grained CoCrFeNiNb high-entropy alloy prepared by mechanical alloying: properties and strengthening mechanism
Popis výsledku anglicky
An equiatomic CoCrFeNiNb alloy was prepared by conventional induction melting and by 8 h of mechanical alloying and compaction via spark plasma sintering. The alloy prepared via mechanical alloying showed a uniform ultrafine-grained microstructure composed of an FCC solid solution strengthened by HCP Laves phases. A detailed TEM inspection revealed the presence of nanocrystalline Cr2O3 particles at the triple junctions of the present grains as well as stacking faults and nanotwins found exclusively in the interior of the FCC solid solution grains. The mechanically alloyed alloy compacted at 1000 °C showed hardness of 798 ± 9 HV 30 and compressive ultimate strength of 2412 MPa. Those values were significantly higher than those obtained for the cast alloy. The strengthening effect of the individual structural contribution was calculated as well.n
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Alloys and Compounds
ISSN
0925-8388
e-ISSN
—
Svazek periodika
835
Číslo periodika v rámci svazku
Sep
Stát vydavatele periodika
NL - Nizozemsko
Počet stran výsledku
19
Strana od-do
1-19
Kód UT WoS článku
000546685800058
EID výsledku v databázi Scopus
2-s2.0-85084254699