Microstructural stability of ODS steels in cyclic loading

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00449372" target="_blank" >RIV/68081723:_____/15:00449372 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1111/ffe.12284" target="_blank" >http://dx.doi.org/10.1111/ffe.12284</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/ffe.12284" target="_blank" >10.1111/ffe.12284</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microstructural stability of ODS steels in cyclic loading

Popis výsledku v původním jazyce

The remarkable microstructural stability of high chromium steels prepared by powder metallurgy and strengthened by dispersion of nanometric yttrium oxides in cyclic loading at high temperatures is reported. Contrary to the continuous cyclic softening andprofound changes in the microstructure during fatigue of common high chromium steels, the addition of 0.3?wt% Y2O3 stabilizes the microstructure and significantly reduces cyclic softening of investigated steels. The evolution of microstructure as a result of fatigue loading at room temperature, 650 and 750?°C, was examined by means of transmission electron microscopy. Only minor changes in the microstructure were detected. The stability of oxide particles after high-temperature exposure was confirmed by energy dispersion spectroscopy chemical analysis. The microstructural features are discussed in relation to the cyclic behaviour of the oxide dispersion strengthened steels. The analysis of the hysteresis loop indicates that oxide nanoc

Název v anglickém jazyce

Microstructural stability of ODS steels in cyclic loading

Popis výsledku anglicky

The remarkable microstructural stability of high chromium steels prepared by powder metallurgy and strengthened by dispersion of nanometric yttrium oxides in cyclic loading at high temperatures is reported. Contrary to the continuous cyclic softening andprofound changes in the microstructure during fatigue of common high chromium steels, the addition of 0.3?wt% Y2O3 stabilizes the microstructure and significantly reduces cyclic softening of investigated steels. The evolution of microstructure as a result of fatigue loading at room temperature, 650 and 750?°C, was examined by means of transmission electron microscopy. Only minor changes in the microstructure were detected. The stability of oxide particles after high-temperature exposure was confirmed by energy dispersion spectroscopy chemical analysis. The microstructural features are discussed in relation to the cyclic behaviour of the oxide dispersion strengthened steels. The analysis of the hysteresis loop indicates that oxide nanoc

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Fatigue and Fracture of Engineering Materials and Structures

ISSN

8756-758X

e-ISSN

—

Svazek periodika

38

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

936-947

Kód UT WoS článku

000357335400006

EID výsledku v databázi Scopus

2-s2.0-84934439064