9Cr-1W steel strengthened by AlN and BN dispersion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F22%3A00558997" target="_blank" >RIV/61389021:_____/22:00558997 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/22:00558997

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s10853-022-07395-2" target="_blank" >https://link.springer.com/article/10.1007/s10853-022-07395-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10853-022-07395-2" target="_blank" >10.1007/s10853-022-07395-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

9Cr-1W steel strengthened by AlN and BN dispersion

Popis výsledku v původním jazyce

Ferritic-martensitic steels of 9Cr-1W type strengthened by oxide dispersion (ODS) are candidate structural materials of in-vessel components of proposed sodium-cooled fast reactors and fusion reactors. As a promising alternative, this work aimed to design ferritic-martensitic 9Cr-1W steels of Eurofer type strengthened by a homogeneous dispersion of nitrides. AlN and BN were selected for this pioneering study, and the two nitride dispersion strengthened (NDS) steels were prepared by mechanical alloying and compacting using spark plasma sintering (SPS). Their mechanical properties were assessed by tensile tests ranging from room temperature to 800 degrees C and compared to the tensile characteristics of conventional as well as oxide dispersion strengthened (ODS) 9Cr-1W steels. The strength of the two NDS steels presented here was comparable or even higher than that of the conventional and the ODS variants. Furthermore, the uniform plastic strain behaviour of the NDS steels was similar to the ODS counterparts prepared by HIP or SPS from mechanically alloyed powders. In addition, the BN reinforcement effectively prevented large plastic deformation at temperatures above 600 degrees C that would typically result in a significant increase in total elongation, a phenomenon encountered in 9Cr-1W steels. This quality could open a new application window and potentially lead to the development of heat-resistant low-chromium 9Cr-1W type steels.

Název v anglickém jazyce

9Cr-1W steel strengthened by AlN and BN dispersion

Popis výsledku anglicky

Ferritic-martensitic steels of 9Cr-1W type strengthened by oxide dispersion (ODS) are candidate structural materials of in-vessel components of proposed sodium-cooled fast reactors and fusion reactors. As a promising alternative, this work aimed to design ferritic-martensitic 9Cr-1W steels of Eurofer type strengthened by a homogeneous dispersion of nitrides. AlN and BN were selected for this pioneering study, and the two nitride dispersion strengthened (NDS) steels were prepared by mechanical alloying and compacting using spark plasma sintering (SPS). Their mechanical properties were assessed by tensile tests ranging from room temperature to 800 degrees C and compared to the tensile characteristics of conventional as well as oxide dispersion strengthened (ODS) 9Cr-1W steels. The strength of the two NDS steels presented here was comparable or even higher than that of the conventional and the ODS variants. Furthermore, the uniform plastic strain behaviour of the NDS steels was similar to the ODS counterparts prepared by HIP or SPS from mechanically alloyed powders. In addition, the BN reinforcement effectively prevented large plastic deformation at temperatures above 600 degrees C that would typically result in a significant increase in total elongation, a phenomenon encountered in 9Cr-1W steels. This quality could open a new application window and potentially lead to the development of heat-resistant low-chromium 9Cr-1W type steels.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA20-20873S" target="_blank" >GA20-20873S: Vývoj ODS ocelí odolných účinkům tekutých kovů pro využití v nových systémech v oblasti jaderného štěpení i fúze</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

Journal of Materials Science

ISSN

0022-2461

e-ISSN

1573-4803

Svazek periodika

57

Číslo periodika v rámci svazku

26

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

12572-12584

Kód UT WoS článku

000817905300003

EID výsledku v databázi Scopus

2-s2.0-85133002877