Deformation behavior of nanoparticle/fiber-reinforced nanocrystalline Al-matrix composites

S. W. Lee, H. J. Choi, Y. Kim, D. H. Bae

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Deformation behavior of nanocrystalline (nc) Al-matrix composites reinforced by nanoparticles/carbon nanotubes (CNTs) has been studied under quasi-static deformation conditions at room temperature. The nc composites are fabricated by hot-extrusion of the mechanically milled nc powders containing randomly embedded nanoparticles/CNTs in the matrix. The nc composite reinforced with 0.7 vol.% CNTs can reach a strength of 480 MPa with elongation to failure of 8% under tension through the resistance of the growing necks formed just after yielding. The nc composite reinforced by CNTs/nanoparticles shows 610 MPa in yield strength. The tightly bonded interface between the matrix and CNTs can also effectively transfer the load to the fibers. Further enhanced strength can be achieved by reinforcing the matrix with dispersed nanoparticles in such composites.

Original languageEnglish
Pages (from-to)782-785
Number of pages4
JournalMaterials Science and Engineering A
Volume449-451
DOIs
Publication statusPublished - 2007 Mar 25

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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