Creep Resistance of S304H Austenitic Steel Processed by High-Pressure Sliding

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F22%3A00551972" target="_blank" >RIV/68081723:_____/22:00551972 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/1996-1944/15/1/331" target="_blank" >https://www.mdpi.com/1996-1944/15/1/331</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma15010331" target="_blank" >10.3390/ma15010331</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Creep Resistance of S304H Austenitic Steel Processed by High-Pressure Sliding

Popis výsledku v původním jazyce

Sheets of coarse-grained S304H austenitic steel were processed by high-pressure sliding (HPS) at room temperature and a ultrafine-grained microstructure with a mean grain size of about 0.14 mu m was prepared. The microstructure changes and creep behavior of coarse-grained and HPS-processed steel were investigated at 500-700 degrees C under the application of different loads. It was found that the processing of S304H steel led to a significant improvement in creep strength at 500 degrees C. However, a further increase in creep temperature to 600 degrees C and 700 degrees C led to the deterioration of creep behavior of HPS-processed steel. The microstructure results suggest that the creep behavior of HPS-processed steel is associated with the thermal stability of the SPD-processed microstructure. The recrystallization, grain growth, the coarsening of precipitates led to a reduction in creep strength of the HPS-processed state. It was also observed that in the HPS-processed microstructure the fast formation of sigma-phase occurs. The sigma-phase was already formed during slight grain coarsening at 600 degrees C and its formation was enhanced after recrystallization at 700 degrees C.

Název v anglickém jazyce

Creep Resistance of S304H Austenitic Steel Processed by High-Pressure Sliding

Popis výsledku anglicky

Sheets of coarse-grained S304H austenitic steel were processed by high-pressure sliding (HPS) at room temperature and a ultrafine-grained microstructure with a mean grain size of about 0.14 mu m was prepared. The microstructure changes and creep behavior of coarse-grained and HPS-processed steel were investigated at 500-700 degrees C under the application of different loads. It was found that the processing of S304H steel led to a significant improvement in creep strength at 500 degrees C. However, a further increase in creep temperature to 600 degrees C and 700 degrees C led to the deterioration of creep behavior of HPS-processed steel. The microstructure results suggest that the creep behavior of HPS-processed steel is associated with the thermal stability of the SPD-processed microstructure. The recrystallization, grain growth, the coarsening of precipitates led to a reduction in creep strength of the HPS-processed state. It was also observed that in the HPS-processed microstructure the fast formation of sigma-phase occurs. The sigma-phase was already formed during slight grain coarsening at 600 degrees C and its formation was enhanced after recrystallization at 700 degrees C.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA19-18725S" target="_blank" >GA19-18725S: Vliv mikrostruktury na creepové mechanismy v pokročilých žárupevných ocelích</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Materials

ISSN

1996-1944

e-ISSN

1996-1944

Svazek periodika

15

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

331

Kód UT WoS článku

000741821300001

EID výsledku v databázi Scopus

2-s2.0-85122158401