IMPROVING THE HIGH-TEMPERATURE PROPERTIES OF A NEW GENERATION OF Fe-Al-O OXIDE-PRECIPITATION-HARDENED STEELS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F19%3AN0000015" target="_blank" >RIV/26316919:_____/19:N0000015 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23210/19:43955935

Výsledek na webu

<a href="http://mit.imt.si/izvodi/mit194/khalaj.pdf" target="_blank" >http://mit.imt.si/izvodi/mit194/khalaj.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17222/mit.2018.227" target="_blank" >10.17222/mit.2018.227</a>

Jazyk výsledku

angličtina

Název v původním jazyce

IMPROVING THE HIGH-TEMPERATURE PROPERTIES OF A NEW GENERATION OF Fe-Al-O OXIDE-PRECIPITATION-HARDENED STEELS

Popis výsledku v původním jazyce

Increasing efficiency in power engineering is conditional on the improvement of the high-temperature properties of structural materials. A new Fe-Al-O Oxide-Precipitation-Hardened (OPH) steel was developed by the authors to dissolve the required amount of O in the matrix during mechanical alloying and let a fine dispersion of Al oxides precipitate during the hot consoli-dation. Compared to oxide-dispersion-strengthened (ODS) ferritic steels, excellent oxidation resistance is guaranteed by using 10 % Al in the matrix. To improve the high-temperature properties of OPH, a series of thermomechanical tests was performed to investigate the recrystallization and grain growth of the microstructures by metallographic analysis. The results show that the heat treatment has a significant influence on the mechanical properties of OPH as well as the microstructure and recrystallization of the grains. It decreased the UTS to almost 25 % of the initial state, while causing plastic deformation. Also, grain growth was observed up to 16 %, even with no annealing and applied deformation, which shows a good structure-oriented material.

Název v anglickém jazyce

IMPROVING THE HIGH-TEMPERATURE PROPERTIES OF A NEW GENERATION OF Fe-Al-O OXIDE-PRECIPITATION-HARDENED STEELS

Popis výsledku anglicky

Increasing efficiency in power engineering is conditional on the improvement of the high-temperature properties of structural materials. A new Fe-Al-O Oxide-Precipitation-Hardened (OPH) steel was developed by the authors to dissolve the required amount of O in the matrix during mechanical alloying and let a fine dispersion of Al oxides precipitate during the hot consoli-dation. Compared to oxide-dispersion-strengthened (ODS) ferritic steels, excellent oxidation resistance is guaranteed by using 10 % Al in the matrix. To improve the high-temperature properties of OPH, a series of thermomechanical tests was performed to investigate the recrystallization and grain growth of the microstructures by metallographic analysis. The results show that the heat treatment has a significant influence on the mechanical properties of OPH as well as the microstructure and recrystallization of the grains. It decreased the UTS to almost 25 % of the initial state, while causing plastic deformation. Also, grain growth was observed up to 16 %, even with no annealing and applied deformation, which shows a good structure-oriented material.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

MATERIALI IN TEHNOLOGIJE

ISSN

1580-2949

e-ISSN

1580-3414

Svazek periodika

53

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

SI - Slovinská republika

Počet stran výsledku

10

Strana od-do

495-504

Kód UT WoS článku

000476652700006

EID výsledku v databázi Scopus

2-s2.0-85069663963