Compressive creep behavior of an oxide-dispersion-strengthened CoCrFeMnNi high-entropy alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F18%3A00495933" target="_blank" >RIV/61389021:_____/18:00495933 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/18:00495933

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.msea.2018.06.108" target="_blank" >http://dx.doi.org/10.1016/j.msea.2018.06.108</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2018.06.108" target="_blank" >10.1016/j.msea.2018.06.108</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Compressive creep behavior of an oxide-dispersion-strengthened CoCrFeMnNi high-entropy alloy

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Compressive creep behavior of an oxide-dispersion-strengthened CoCrFeMnNi high-entropy alloy

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA17-23964S" target="_blank" >GA17-23964S: Disperzně zpevněné vysoce entropické slitiny pro použití za extrémních podmínek</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Materials Science and Engineering A-Structural materials

ISSN

0921-5093

e-ISSN

—

Svazek periodika

732

Číslo periodika v rámci svazku

AUG

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

6

Strana od-do

99-104

Kód UT WoS článku

000441486100013

EID výsledku v databázi Scopus

2-s2.0-85049520234