Effect of ceramic preform geometry on load partitioning in Al2O3-Al composites with three-dimensional periodic architecture

M. L. Young*, R. Rao, J. D. Almer, D. R. Haeffner, J. A. Lewis, David C Dunand

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Interpenetrating Al2O3/Al composites were created by liquid-metal infiltration of 3D periodic ceramic preforms with face-centered-tetragonal symmetry produced by direct-write assembly. Volume-averaged lattice strains in the ceramic phase of the composite were measured by synchrotron X-ray diffraction for various levels of uniaxial compression stresses. Load transfer is found to occur from the metal phase to the ceramic phase, and the magnitude of the effect is in general agreement with simple rule-of-mixtures models. Spatially resolved diffraction measurements show variations in load transfer at two different positions within the composite for the elastic- and damage-deformation regimes, the latter being observed using phase-enhanced synchrotron imaging. The mechanical behavior of these interpenetrating Al2O3/Al composites with face-centered-tetragonal symmetry are compared with previous interpenetrating Al2O3/Al composites with simple-tetragonal symmetry.

Original languageEnglish (US)
Pages (from-to)190-196
Number of pages7
JournalMaterials Science and Engineering A
Volume526
Issue number1-2
DOIs
StatePublished - Nov 25 2009

Keywords

  • Aluminum
  • Compression test
  • Metal matrix composites (MMC)
  • Synchrotron radiation
  • X-ray diffraction (XRD)

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Effect of ceramic preform geometry on load partitioning in Al<sub>2</sub>O<sub>3</sub>-Al composites with three-dimensional periodic architecture'. Together they form a unique fingerprint.

Cite this