Journal
METALS
Volume 11, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/met11010062
Keywords
alloy; nanocomposite; magnesium; synthesis; microstructure; mechanical properties
Funding
- Ministry of Education Tier 2 Funding, Singapore [R265-000-622-112]
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The study found that alloying and nano-reinforcement can significantly improve the mechanical properties of Mg-based alloys and composites, particularly in terms of microhardness, tensile strength, and compressive strength.
The present study investigated the effects of alloying and nano-reinforcement on the mechanical properties (microhardness, tensile strength, and compressive strength) of Mg-based alloys and composites. Pure Mg, Mg-3Sn alloy, and Mg-3Sn + 0.2 GNP alloy-nanocomposite were synthesized by powder metallurgy followed by hot extrusion. The microstructural characteristics of the bulk extruded samples were explored using X-ray diffraction, field-emission scanning electron microscopy, and optical microscopy and their mechanical properties were compared. The microhardness, tensile strength, and compressive strength of the Mg-3Sn alloy improved when compared to those of monolithic Mg sample and further improvements were displayed by Mg-3Sn + 0.2 GNP alloy-nanocomposite. No significant change in the compressive strain to failure was observed in both the alloy and the alloy-nanocomposite with respect to that of the pure Mg sample. However, an enhanced tensile strain to failure was displayed by both the alloy and the alloy-nanocomposite.
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