The effect of Zr on dynamic recrystallization during ECAP processing of Mg-Y-RE alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F21%3A00542560" target="_blank" >RIV/61389005:_____/21:00542560 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/21:10431206

Výsledek na webu

<a href="https://doi.org/10.1016/j.matchar.2021.111033" target="_blank" >https://doi.org/10.1016/j.matchar.2021.111033</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchar.2021.111033" target="_blank" >10.1016/j.matchar.2021.111033</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of Zr on dynamic recrystallization during ECAP processing of Mg-Y-RE alloys

Popis výsledku v původním jazyce

Two magnesium alloys containing yttrium and rare-earth elements were processed by equal channel angular pressing (ECAP) to explore the effect of the small addition of zirconium on the resulting microstructures. The composition of the alloys was Mg?3.8wt%Y?2.6 wt%RE?0.45 wt%Zr (WE43) and Mg?4.1wt%Y?2.8wt%Nd (WN43), respectively. It is shown that small Zr addition facilitates the formation of small secondary phase particles. The particles become smaller, and their distribution is denser. Consequently, the grain nucleation processes are more active, grain growth is suppressed, and the final grain size is smaller. The faster nucleation rate affects the texture formation during ECAP as well. It is shown that this effect is independent of the initial microstructural condition concerning both the grain size and the presence/distribution of secondary phase particles. The positive impact of Zr was proven employing scanning and transmission electron microscopy, texture measurements by X-ray diffraction and further reflected in the improved strength of the material in terms of microhardness and compression testing. It was shown that, in this way, the microstructure and texture of MgRE alloys could be effectively tailored by small Zr additions.

Název v anglickém jazyce

The effect of Zr on dynamic recrystallization during ECAP processing of Mg-Y-RE alloys

Popis výsledku anglicky

Two magnesium alloys containing yttrium and rare-earth elements were processed by equal channel angular pressing (ECAP) to explore the effect of the small addition of zirconium on the resulting microstructures. The composition of the alloys was Mg?3.8wt%Y?2.6 wt%RE?0.45 wt%Zr (WE43) and Mg?4.1wt%Y?2.8wt%Nd (WN43), respectively. It is shown that small Zr addition facilitates the formation of small secondary phase particles. The particles become smaller, and their distribution is denser. Consequently, the grain nucleation processes are more active, grain growth is suppressed, and the final grain size is smaller. The faster nucleation rate affects the texture formation during ECAP as well. It is shown that this effect is independent of the initial microstructural condition concerning both the grain size and the presence/distribution of secondary phase particles. The positive impact of Zr was proven employing scanning and transmission electron microscopy, texture measurements by X-ray diffraction and further reflected in the improved strength of the material in terms of microhardness and compression testing. It was shown that, in this way, the microstructure and texture of MgRE alloys could be effectively tailored by small Zr additions.

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Materials Characterization

ISSN

1044-5803

e-ISSN

1873-4189

Svazek periodika

174

Číslo periodika v rámci svazku

APR

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

111033

Kód UT WoS článku

000640905500005

EID výsledku v databázi Scopus

2-s2.0-85102795747