Reinforcement of magnesium Elektron 21 with aluminium nitride (AlN) nanoparticles dispersed using a travelling magnetic field

Mariano Garrido (1) , Laurent Davoust (1) , Rémi Daudin (1) , Luc Salvo (1) , Wim H Sillekens (2) , Yves Fautrelle (1)

1 SIMaP - Science et Ingénierie des Matériaux et Procédés
2 ESA - Agence Spatiale Européenne = European Space Agency

Magnesium alloy Elektron 21 is commonly used in aerospace structural parts in which good creep resistance and lightness are required. This alloy maintains good mechanical properties at temperatures as high as200°C. One mechanism with high potential for improving mechanical properties of magnesium alloys at a high temperature is dispersion-strengthening based on nanoparticles. In this paper, we analyse the properties of magnesium Elektron21 samples solidified with nanoparticles of aluminium nitride dispersed by an electromagnetic stirring provided from a travelling magnetic field. X-raytomography and X-rays spectrometry as well as compression tests at several temperatures (350, 400 and 450°C) are carried out on samples containing the nanoparticles. The present study extends the knowledge on the processing by alternative techniques and on the enhancement of creep behaviour at higher temperatures for such metal matrix composites compared to previous studies

Keywords: metal matrix composites; electromagnetic stirring; creep resistance; hot deformation behaviour; constitutive equation; deformation activation energy

Domains: Engineering Sciences [physics]; Materials; Engineering Sciences [physics]; Mechanics [physics.med-ph]; Mechanics of materials [physics.class-ph]

Mariano Garrido, Laurent Davoust, Rémi Daudin, Luc Salvo, Wim H Sillekens, et al.. Reinforcement of magnesium Elektron 21 with aluminium nitride (AlN) nanoparticles dispersed using a travelling magnetic field. Metallurgical Research & Technology, 2020, 117 (2), ⟨10.1051/metal/2020016⟩. ⟨hal-03048051⟩