Magnesium Alloys with Enhanced Ignition Resistance for Aerospace and Automotive Applications

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510889" target="_blank" >RIV/00216208:11320/25:10510889 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/1742-6596/3035/1/012013" target="_blank" >https://doi.org/10.1088/1742-6596/3035/1/012013</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/3035/1/012013" target="_blank" >10.1088/1742-6596/3035/1/012013</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Magnesium Alloys with Enhanced Ignition Resistance for Aerospace and Automotive Applications

Popis výsledku v původním jazyce

Magnesium alloys, known for their excellent strength-to-weight ratio, are emerging as promising materials in the automotive and aerospace industries. However, due to their high reactivity with oxygen, low ignition temperature and rapid degradation of mechanical properties at elevated temperatures, their applications are limited. In this study, we explored three magnesium alloy systems enriched with rare earth (RE) elements and calcium: Mg-4.5Gd-3.4Y-2.6Ca, Mg-2Y-2Gd-1Ca, and Mg-4Ca-1Y (weight %). These alloys were prepared through casting and then extruded at temperatures of 300 °C, 350 °C, and 400 °C, with extrusion ratios of 11 and 25. This approach allowed us to examine the effects of both composition and processing techniques on the materials. The microstructure primarily consisted of a solid solution of magnesium and the Mg2Ca phase, along with minor amounts of RE-hydrides, RE-oxides, and Mg-RE particles. Notably, extrusion at 400 °C resulted in a larger grain size (5.5 μm) compared to lower extrusion temperatures (around 2.5 μm). The obtained results showed the exceptional ignition resistance of these alloys. The ignition temperature ranged from approximately 950 °C for Mg-2Y-2Gd-1Ca to over 1100 °C for Mg-4.5Gd-3.4Y-2.6Ca and Mg-4Ca-1Y. This high resistance results from the synergistic effects of Y, Gd, and Ca oxides. Compression tests revealed alloys with higher RE content exhibited superior mechanical properties compared to those with more calcium. However, Mg-4Ca-1Y still achieved remarkable ignition resistance.

Název v anglickém jazyce

Magnesium Alloys with Enhanced Ignition Resistance for Aerospace and Automotive Applications

Popis výsledku anglicky

Magnesium alloys, known for their excellent strength-to-weight ratio, are emerging as promising materials in the automotive and aerospace industries. However, due to their high reactivity with oxygen, low ignition temperature and rapid degradation of mechanical properties at elevated temperatures, their applications are limited. In this study, we explored three magnesium alloy systems enriched with rare earth (RE) elements and calcium: Mg-4.5Gd-3.4Y-2.6Ca, Mg-2Y-2Gd-1Ca, and Mg-4Ca-1Y (weight %). These alloys were prepared through casting and then extruded at temperatures of 300 °C, 350 °C, and 400 °C, with extrusion ratios of 11 and 25. This approach allowed us to examine the effects of both composition and processing techniques on the materials. The microstructure primarily consisted of a solid solution of magnesium and the Mg2Ca phase, along with minor amounts of RE-hydrides, RE-oxides, and Mg-RE particles. Notably, extrusion at 400 °C resulted in a larger grain size (5.5 μm) compared to lower extrusion temperatures (around 2.5 μm). The obtained results showed the exceptional ignition resistance of these alloys. The ignition temperature ranged from approximately 950 °C for Mg-2Y-2Gd-1Ca to over 1100 °C for Mg-4.5Gd-3.4Y-2.6Ca and Mg-4Ca-1Y. This high resistance results from the synergistic effects of Y, Gd, and Ca oxides. Compression tests revealed alloys with higher RE content exhibited superior mechanical properties compared to those with more calcium. However, Mg-4Ca-1Y still achieved remarkable ignition resistance.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

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

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

Journal of Physics Conference Series

ISBN

—

ISSN

1742-6596

e-ISSN

1742-6596

Počet stran výsledku

6

Strana od-do

1-6

Název nakladatele

Tanger Ltd.

Místo vydání

Plzeň

Místo konání akce

Plzeň

Datum konání akce

12. 10. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001613929300013