Magnesium Nanocomposites Reinforced With A High Volume Fraction Of Sic Particulates

Keywords

Magnesium alloys; Mechanical alloying; Micromechanics; Nanostructured materials; Plasticity

Abstract

The microstructure and indentation behavior of magnesium nanocomposites containing a high volume fraction (up to 15 vol.%) of nanometer-sized SiC was studied using X-ray diffraction, electron microscopy, and microindentation techniques. The indentation hardness and contact stiffness were found to increase with increasing volume fraction of the nanometer-sized SiC particles up to 10 vol.%. The magnesium nanocomposites with 15 vol.% SiC had a lower indentation hardness than that of 10 vol.% SiC. The strain rate sensitivity exponent of the Mg–SiC nanocomposites increased with increasing volume fraction of SiC. The decrease of the indentation hardness suggested that the deformation mechanism of the magnesium nanocomposites was likely altered when the critical volume percent of SiC nanoparticles was achieved, estimated at 10 vol.%.

Publication Date

10-1-2017

Publication Title

International Journal of Materials Research

Volume

108

Issue

10

Number of Pages

848-856

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.3139/146.111546

Socpus ID

85031018154 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85031018154

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