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Effect of Nd content on microstructure and mechanical properties of Grf/Al composite

  • Xu Wang*
  • , Guoqin Chen
  • , Wenshu Yang
  • , Murid Hussain
  • , Chenchong Wang
  • , Gaohui Wu
  • , Daming Jiang
  • *Corresponding author for this work
  • Liaoning University of Petroleum and Chemical Technology
  • Harbin Institute of Technology
  • Polytechnic University of Turin

Research output: Contribution to journalArticlepeer-review

Abstract

M40 graphite fibre reinforced Al-17Mg matrix composites with different neodymium (Nd) content (Al-17Mg, Al-17Mg-0.2Nd, Al-17Mg-0.5Nd and Al-17Mg-2Nd) were fabricated by pressure infiltration method. Microstructure of Grf/Al composites was investigated by XRD, SEM, TEM and HRTEM. Effect of Nd on microstructure and mechanical properties of Grf/Al composites were deeply discussed. Al3Mg2 and Al11Nd3 phases followed by segregation of Nd and Mg at carbon-aluminum interface were detected in composites containing Nd. The size and amount of Al4C3 phase were increased with Nd content. Bending strength of Grf/Al composites were decreased sharply from 1463MPa (Grf/Al-17Mg) to 791MPa (Grf/Al-17Mg-2Nd) after the addition of Nd. The increased Nd content decreased the pull-out of single fibre and bundles, which was due to the high interfacial bonding strength with formation of Al4C3, Al3Mg2, Al11Nd3 phases and the transition layer.

Original languageEnglish
Pages (from-to)8212-8217
Number of pages6
JournalMaterials Science and Engineering: A
Volume528
Issue number28
DOIs
StatePublished - 25 Oct 2011
Externally publishedYes

Keywords

  • Composite
  • Electron microscopy
  • Failure
  • Interface

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