In situ (Al3Zrp+Al2O3np)/2024Al metal matrix composite with controlled reinforcement architecture fabricated by reaction hot pressing

B. Kaveendran, G. S. Wang*, L. J. Huang, L. Geng, Y. Luo, H. X. Peng

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

18 Citations (Scopus)

Abstract

Based on the in situ reaction between Al and ZrO2 an (Al3Zrp+Al2O3np)/2024Al hybrid composite with a network reinforcement architecture was fabricated using reaction hot pressing. The microstructure consisting of a reinforcement-rich network surrounding the reinforcement-lean matrix resulted in unique fracture characteristics. Due to the introduction of reinforcement particles, the network structured composite exhibited an improvement in mechanical properties when compared to the unreinforced alloy. In comparison to the composite with a homogeneous distribution, the tensile strength and ductility of the network structured composite showed a 12.5 and 76.9% increase. The strengthening mechanism of the network structured composite was investigated. The reinforcement-rich network forming a three-dimensional (3D) skeleton was responsible for the enhanced strength of the composite. The large reinforcement-lean matrix interpenetrating through the network contributed to the ductility of the composite. (c) 2013 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)89-95
Number of pages7
JournalMaterials Science and Engineering: A
Volume583
DOIs
Publication statusPublished - 20 Oct 2013

Keywords

  • Hybrid composites
  • 3-D reinforcement
  • Mechanical characterization
  • Reaction hot pressing
  • TENSILE PROPERTIES
  • MELT REACTION
  • NETWORK
  • ALUMINIUM
  • EXTRUSION

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