Direct consolidation of an oxide dispersion strengthened alloy by hot rotary swaging

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F24%3A00598404" target="_blank" >RIV/68081723:_____/24:00598404 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27360/24:10255748

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/10.1002/mawe.202400023" target="_blank" >https://onlinelibrary.wiley.com/doi/10.1002/mawe.202400023</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/mawe.202400023" target="_blank" >10.1002/mawe.202400023</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Direct consolidation of an oxide dispersion strengthened alloy by hot rotary swaging

Popis výsledku v původním jazyce

Steels strengthened by alloying elements and precipitates typically maintain their enhanced properties up to the ferrite-austenite transformation. However, oxide dispersion strengthened ferritic steels are creep resistant even at much higher temperatures given by dispersions of nanosized oxides. To ensure homogeneous dispersion of the oxides, powder metallurgy is used for preparation of the original material. The presented study investigates the effects of direct consolidation of powder of ferritic steel strengthened with yttrium oxide nanoparticles. The powders were mechanically alloyed and sealed into evacuated steel containers, which were subjected to gradual hot consolidation via the industrially applicable intensive plastic deformation method of rotary swaging. Investigations assessing the effects of several reduction ratios showed that the direct consolidation of the oxide dispersion strengthened steel was successful in the macroscale at the swaging ratio of 1.03, the quality of consolidation further increased with increasing swaging ratio. At the swaging ratio of 1.83, the consolidated bulk material featured ultra-fine grains characterized with high angle grain boundaries, homogeneous dispersion of oxide precipitates, and the average Vickers microhardness of 706.6 HV 1.

Název v anglickém jazyce

Direct consolidation of an oxide dispersion strengthened alloy by hot rotary swaging

Popis výsledku anglicky

Steels strengthened by alloying elements and precipitates typically maintain their enhanced properties up to the ferrite-austenite transformation. However, oxide dispersion strengthened ferritic steels are creep resistant even at much higher temperatures given by dispersions of nanosized oxides. To ensure homogeneous dispersion of the oxides, powder metallurgy is used for preparation of the original material. The presented study investigates the effects of direct consolidation of powder of ferritic steel strengthened with yttrium oxide nanoparticles. The powders were mechanically alloyed and sealed into evacuated steel containers, which were subjected to gradual hot consolidation via the industrially applicable intensive plastic deformation method of rotary swaging. Investigations assessing the effects of several reduction ratios showed that the direct consolidation of the oxide dispersion strengthened steel was successful in the macroscale at the swaging ratio of 1.03, the quality of consolidation further increased with increasing swaging ratio. At the swaging ratio of 1.83, the consolidated bulk material featured ultra-fine grains characterized with high angle grain boundaries, homogeneous dispersion of oxide precipitates, and the average Vickers microhardness of 706.6 HV 1.

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

2024

Kód důvěrnosti údajů

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

Název periodika

Materialwissenschaft Und Werkstofftechnik

ISSN

0933-5137

e-ISSN

1521-4052

Svazek periodika

55

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

588-597

Kód UT WoS článku

001309057000007

EID výsledku v databázi Scopus

2-s2.0-85195154410