Magnesium nanocomposites reinforced with a high volume fraction of SiC particulates

Jinling Liu, C. Suryanarayana, Min Zhang, Yiguang Wang, Fuqian Yang, Linan An

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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.%.

Original languageEnglish
Pages (from-to)848-856
Number of pages9
JournalInternational Journal of Materials Research
Volume108
Issue number10
DOIs
StatePublished - Oct 2017

Bibliographical note

Funding Information:
This work was financially supported by the State Key Laboratory of Traction Power (Grand No. 2015TPL_Z01), National Nature Science Foundation of China (Grant Nos. 51402237 and 51672227), China Scholarship Council (Grand No. 2008629106).

Keywords

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

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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