Interfacial shear and matrix plasticity during fiber push-out in a metal-matrix composite

D. A. Koss, R. R. Petrich, M. N. Kallas, J. R. Hellmann

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Interfacial shear during thin-slice fiber push-out of sapphre fibers bonded to a niobium matrix has been examined both experimentally and computationally. Observations indicate a failure process involving the combination of interfacial crack growth and diffuse matrix deformation at opposite ends of the fibers being displaced. The result is a stage during which 'stable' fiber displacement occurs under increasing axial loads applied to the fiber. A straightforward analysis of the extent of this stage suggests that it obeys a load instability criterion, depending on the competition between geometric softening due to interfacial crack growth and strain-hardening within the matrix near the interface.

Original languageEnglish (US)
Pages (from-to)27-33
Number of pages7
JournalComposites Science and Technology
Volume51
Issue number1
DOIs
StatePublished - 1994

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Engineering(all)

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