Mg-based alloys with Y, Ca and Al reaching exceptional ignition resistance and suppressed flammability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00598301" target="_blank" >RIV/68378271:_____/24:00598301 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/24:10484306 RIV/60461373:22310/24:43930794

Výsledek na webu

<a href="https://doi.org/10.1016/j.jallcom.2024.175836" target="_blank" >https://doi.org/10.1016/j.jallcom.2024.175836</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2024.175836" target="_blank" >10.1016/j.jallcom.2024.175836</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mg-based alloys with Y, Ca and Al reaching exceptional ignition resistance and suppressed flammability

Popis výsledku v původním jazyce

Magnesium alloys are increasingly pivotal in automotive and aerospace engineering due to their superior strength-to-weight ratio. This rising prominence necessitates advancements in their mechanical characteristics, such as tensile strength, ductility, and fatigue endurance, alongside enhanced control over their interaction with oxygen. A critical phenomenon in this context is the ignition of magnesium in oxygen-rich environments at high temperatures. This exothermic reaction induces a rapid temperature surge, potentially reaching 3000 degrees C, leading to the catastrophic disintegration of magnesium alloy components. Consequently, research in magnesium technology also focuses on augmenting the ignition threshold and diminishing the material's combustibility. This expansion in the application scope for magnesium alloys in the aviation and aerospace sectors hinges on developing novel alloy compositions. Elements like yttrium (Y), rare-earth elements, and calcium (Ca) are under exploration for their potential to bolster ignition resistance in magnesium alloys. However, the impact of these elements on ignition and flammability is highly dependent on their concentration and the overall alloy chemistry. Four magnesium alloys, integrating yttrium, calcium, and aluminium a conventional element in commercial alloys were synthesised in the study under discussion through casting and thermal processing. These alloys were methodically examined for microstructural evolution and their resistance to ignition and flammability. The results demonstrated that when appropriately balanced with yttrium, aluminium is a viable alloying element in magnesium alloys without significantly compromising ignition resistance. The alloy WAX211 exhibited the highest ignition temperature of 940 degrees C, attributed to the synergistic effects of calcium and yttrium and the formation of a highly stable protective oxide layer.

Název v anglickém jazyce

Mg-based alloys with Y, Ca and Al reaching exceptional ignition resistance and suppressed flammability

Popis výsledku anglicky

Magnesium alloys are increasingly pivotal in automotive and aerospace engineering due to their superior strength-to-weight ratio. This rising prominence necessitates advancements in their mechanical characteristics, such as tensile strength, ductility, and fatigue endurance, alongside enhanced control over their interaction with oxygen. A critical phenomenon in this context is the ignition of magnesium in oxygen-rich environments at high temperatures. This exothermic reaction induces a rapid temperature surge, potentially reaching 3000 degrees C, leading to the catastrophic disintegration of magnesium alloy components. Consequently, research in magnesium technology also focuses on augmenting the ignition threshold and diminishing the material's combustibility. This expansion in the application scope for magnesium alloys in the aviation and aerospace sectors hinges on developing novel alloy compositions. Elements like yttrium (Y), rare-earth elements, and calcium (Ca) are under exploration for their potential to bolster ignition resistance in magnesium alloys. However, the impact of these elements on ignition and flammability is highly dependent on their concentration and the overall alloy chemistry. Four magnesium alloys, integrating yttrium, calcium, and aluminium a conventional element in commercial alloys were synthesised in the study under discussion through casting and thermal processing. These alloys were methodically examined for microstructural evolution and their resistance to ignition and flammability. The results demonstrated that when appropriately balanced with yttrium, aluminium is a viable alloying element in magnesium alloys without significantly compromising ignition resistance. The alloy WAX211 exhibited the highest ignition temperature of 940 degrees C, attributed to the synergistic effects of calcium and yttrium and the formation of a highly stable protective oxide layer.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA22-22248S" target="_blank" >GA22-22248S: Hořčíkové slitiny pro letecké aplikace s optimalizovaným složením, mikrostrukturou a odolností proti vznícení</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

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

1873-4669

Svazek periodika

1004

Číslo periodika v rámci svazku

Nov

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

175836

Kód UT WoS článku

001295575800001

EID výsledku v databázi Scopus

2-s2.0-85201076931