Influencing factors on secondary recrystallization in an oxide-dispersion-strengthened ferritic alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F25%3A00638489" target="_blank" >RIV/68081723:_____/25:00638489 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26620/26:0198629

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1044580325007569?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1044580325007569?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchar.2025.115467" target="_blank" >10.1016/j.matchar.2025.115467</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influencing factors on secondary recrystallization in an oxide-dispersion-strengthened ferritic alloy

Popis výsledku v původním jazyce

Secondary recrystallization is a key mechanism to produce a microstructure combining high volume fraction of particles and coarse grains which is favorable for low creep strain rates at very high temperatures. However, processing is very sensitive as minor changes can have a huge impact on the final grain size. To elucidate the behavior of secondary recrystallization, this work investigates the effect of different additions of metallic yttrium and a varying consolidation process of a ferritic Fe-Al-Cr based ODS alloy with 5 vol% of nanooxides, called FeAlOY, on the secondary recrystallization process during final annealing at 1100 degrees C. The grain size changes from the order of 100 nm in the hot-consolidated state to a final size of 1-10 mm. The so-called abnormal grain growth occurs after a certain incubation time and when initiated, it takes approx. 20 min. The incubation time of secondary recrystallization increases with increasing rolling intensities and Y-contents, resulting in larger grains. Especially high deformations during hot-rolling yield comparably large grains after annealing. The onset and kinetics of secondary recrystallization are therefore modeled and discussed with respect to the grain- and oxide size evolution during annealing, giving insights into the mechanism of secondary recrystallization.

Název v anglickém jazyce

Influencing factors on secondary recrystallization in an oxide-dispersion-strengthened ferritic alloy

Popis výsledku anglicky

Secondary recrystallization is a key mechanism to produce a microstructure combining high volume fraction of particles and coarse grains which is favorable for low creep strain rates at very high temperatures. However, processing is very sensitive as minor changes can have a huge impact on the final grain size. To elucidate the behavior of secondary recrystallization, this work investigates the effect of different additions of metallic yttrium and a varying consolidation process of a ferritic Fe-Al-Cr based ODS alloy with 5 vol% of nanooxides, called FeAlOY, on the secondary recrystallization process during final annealing at 1100 degrees C. The grain size changes from the order of 100 nm in the hot-consolidated state to a final size of 1-10 mm. The so-called abnormal grain growth occurs after a certain incubation time and when initiated, it takes approx. 20 min. The incubation time of secondary recrystallization increases with increasing rolling intensities and Y-contents, resulting in larger grains. Especially high deformations during hot-rolling yield comparably large grains after annealing. The onset and kinetics of secondary recrystallization are therefore modeled and discussed with respect to the grain- and oxide size evolution during annealing, giving insights into the mechanism of secondary recrystallization.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GX21-02203X" target="_blank" >GX21-02203X: Vylepšení vlastností současných špičkových slitin</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

Materials Characterization

ISSN

1044-5803

e-ISSN

1873-4189

Svazek periodika

229

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

115467

Kód UT WoS článku

001555070300001

EID výsledku v databázi Scopus

2-s2.0-105013497824