Microstructure and mechanical properties of an Al-TiC metal matrix composite obtained by reactive synthesis

Nassim Samer, Jérôme Andrieux, Bruno Gardiola, Nikhil Karnatak, Olivier Martin, Hiroki Kurita, Laurent Chaffron, Sophie Gourdet, Sabine Lay, Olivier Dezellus

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

A metal matrix composite has been obtained by a novel synthesis route, reacting Al3Ti and graphite at 1000 °C for about 1 min after ball-milling and compaction. The resulting composite is made of an aluminium matrix reinforced by nanometer sized TiC particles (average diameter 70 nm). The average TiC/Al ratio is 34.6 wt.% (22.3 vol.%). The microstructure consists of an intimate mixture of two domains, an unreinforced domain made of the Al solid solution with a low TiC reinforcement content, and a reinforced domain. This composite exhibits uncommon mechanical properties with regard to previous micrometer sized Al-TiC composites and to its high reinforcement volume fraction, with a Young's modulus of ∼110 GPa, an ultimate tensile strength of about 500 MPa and a maximum elongation of 6%.

Original languageEnglish
Pages (from-to)50-57
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume72
DOIs
Publication statusPublished - 2015 May
Externally publishedYes

Keywords

  • A. Metal-matrix composites
  • A. Particle-reinforcement
  • B. Mechanical properties
  • B. Microstructures

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

Fingerprint Dive into the research topics of 'Microstructure and mechanical properties of an Al-TiC metal matrix composite obtained by reactive synthesis'. Together they form a unique fingerprint.

Cite this