The influence of the reinforcing particle shape and interface strength on the fracture behavior of a metal matrix composite

V. A. Romanova, Ruslan Revovich Balokhonov, S. Schmauder

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

A numerical analysis of the reinforcing particle shape and interface strength effects on the deformation and fracture behavior of an Al/Al2O3 composite is performed. Three-dimensional calculations are carried out for five elastic-brittle particles embedded into the elastic-plastic matrix, the reinforcing particle shape being varied from spherical to strongly irregular. It is shown that microstructural heterogeneity of the composite gives rise to a complex stress-strain state in the vicinity of particle boundaries and hence to near-interface areas undergoing tensile deformation both in tension and compression. Within the strain range under study, compressive strength is not achieved, either in compression or in tension, i.e., all cracks grow only under tensile stress. Particle fracture is found to occur by two mechanisms: interface debonding and particle cracking. Individual and combined effects of the particle shape, interface strength, and loading conditions on the fracture mechanisms are analyzed.

Original languageEnglish
Pages (from-to)97-107
Number of pages11
JournalActa Materialia
Volume57
Issue number1
DOIs
Publication statusPublished - 1 Jan 2009
Externally publishedYes

Keywords

  • Finite-difference modeling
  • Fracture
  • Mesoscale stress-strain state
  • Metal matrix composites

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Fingerprint Dive into the research topics of 'The influence of the reinforcing particle shape and interface strength on the fracture behavior of a metal matrix composite'. Together they form a unique fingerprint.

  • Cite this