Počet záznamů: 1
Compressive creep behavior of an oxide-dispersion-strengthened CoCrFeMnNi high-entropy alloy
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SYSNO ASEP 0495933 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Compressive creep behavior of an oxide-dispersion-strengthened CoCrFeMnNi high-entropy alloy Tvůrce(i) Dobeš, Ferdinand (UFM-A) RID, ORCID
Hadraba, Hynek (UFM-A) RID, ORCID
Chlup, Zdeněk (UFM-A) RID, ORCID
Dlouhý, Antonín (UFM-A) RID, ORCID
Vilémová, Monika (UFP-V) RID, ORCID
Matějíček, Jiří (UFP-V) RID, ORCIDCelkový počet autorů 6 Zdroj.dok. Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. - : Elsevier - ISSN 0921-5093
Roč. 732, AUG (2018), s. 99-104Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova superplasticity ; temperatures ; diffusion ; model ; flow ; High-entropy alloy ; Oxide dispersion strengthened alloy ; Creep ; Mechanical alloying ; Powder metallurgy ; Spark plasma sintering Vědní obor RIV BM - Fyzika pevných látek a magnetismus Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) Vědní obor RIV – spolupráce Ústav fyziky plazmatu CEP GA17-23964S GA ČR - Grantová agentura ČR Institucionální podpora UFM-A - RVO:68081723 ; UFP-V - RVO:61389021 UT WOS 000441486100013 EID SCOPUS 85049520234 DOI 10.1016/j.msea.2018.06.108 Anotace Creep tests of two equiatomic CoCrFeMnNi alloys were conducted in the temperature range from 973 K to 1073 K. The alloys were prepared by milling blends of powders of pure elements in a planetary ball mill and compacting by the spark plasma technique. Two variants of the alloys were prepared: (i) without and (ii) with the dispersion of oxides. Creep resistance was substantially improved by the presence of oxides. Diffusion creep controlled by lattice diffusion was suggested as a possible mechanism at low stresses. The effective diffusion coefficient calculated for Nabarro-Herring creep was comparable to the lattice diffusion coefficient of Ni in the same high-entropy alloy. At high stresses, the creep behavior was characterized by the presence of a threshold stress invoked by oxide particles. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2019
Počet záznamů: 1