Abstract
Incorporated SiC nanoparticles are demonstrated to influence the solidification of magnesium-zinc alloys resulting in strong, ductile, and castable materials. By ultrasonically dispersing a small amount (less than 2 vol pct) of SiC nanoparticles, both the strength and ductility exhibit marked enhancement in the final casting. This unusual ductility enhancement is the result of the nanoparticles altering the selection of intermetallic phases. Using transmission electron microscopy (TEM), the MgZn2 phase was discovered among SiC nanoparticle clusters in hypoeutectic compositions. Differential thermal analysis showed that the MgZn2 formation resulted in elimination of other intermetallics in the Mg-4Zn nanocomposite and reduced their formation in Mg-6Zn and Mg-8Zn nanocomposites.
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De Cicco, M., Konishi, H., Cao, G. et al. Strong, Ductile Magnesium-Zinc Nanocomposites. Metall Mater Trans A 40, 3038–3045 (2009). https://doi.org/10.1007/s11661-009-0013-0
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DOI: https://doi.org/10.1007/s11661-009-0013-0