Role of grain boundary sliding in creep of FCC complex solid solutions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00640519" target="_blank" >RIV/68081723:_____/25:00640519 - isvavai.cz</a>

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10853-025-11360-0" target="_blank" >https://link.springer.com/article/10.1007/s10853-025-11360-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10853-025-11360-0" target="_blank" >10.1007/s10853-025-11360-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Role of grain boundary sliding in creep of FCC complex solid solutions

Popis výsledku v původním jazyce

The present study reports on creep in two polycrystalline variants of FCC compositionally complex solid solutions, quinary CrMnFeCoNi (A5), and quaternary CrFeCoNi (A4). Tensile and compression creep experiments were performed at three temperatures, 873, 973 and 1073 K, and a range of applied stress. Apparent creep activation energies measured for the alloy A5 varied between 220 and 262 kJ mol-1, which are systematically lower than activation energies reported for bulk diffusion of any of the five alloy constituents, indicating that grain boundary diffusion contributes to the temperature dependence of creep rate. Based on microstructural investigations, we provide conclusive proof for the occurrence of grain boundary sliding (GBS) at 973 and 873 K in the A4 alloy. A statistically relevant assessment of the GBS sliding parameters after creep of A4 at 873 K showed that up to about 60% of the total accumulated strain in early creep can be attributed to the GBS mechanism.

Název v anglickém jazyce

Role of grain boundary sliding in creep of FCC complex solid solutions

Popis výsledku anglicky

The present study reports on creep in two polycrystalline variants of FCC compositionally complex solid solutions, quinary CrMnFeCoNi (A5), and quaternary CrFeCoNi (A4). Tensile and compression creep experiments were performed at three temperatures, 873, 973 and 1073 K, and a range of applied stress. Apparent creep activation energies measured for the alloy A5 varied between 220 and 262 kJ mol-1, which are systematically lower than activation energies reported for bulk diffusion of any of the five alloy constituents, indicating that grain boundary diffusion contributes to the temperature dependence of creep rate. Based on microstructural investigations, we provide conclusive proof for the occurrence of grain boundary sliding (GBS) at 973 and 873 K in the A4 alloy. A statistically relevant assessment of the GBS sliding parameters after creep of A4 at 873 K showed that up to about 60% of the total accumulated strain in early creep can be attributed to the GBS mechanism.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA14-22834S" target="_blank" >GA14-22834S: Fázová stabilita a plasticita slitin se střední až vysokou entropií</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Science

ISSN

0022-2461

e-ISSN

1573-4803

Svazek periodika

60

Číslo periodika v rámci svazku

39

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

18549-18559

Kód UT WoS článku

001564667800001

EID výsledku v databázi Scopus

2-s2.0-105015483079