Internal strain measurements and X-ray imaging in interpenetrating-phase Al2O3/Al composites

Marcus L. Young*, Jon D. Almer, Ulrich Lienert, Kamel Fezzaa, Wah Keat Lee, Dean R. Haeffner, David C. Dunand

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

Interpenetrating Al2O3/Al composites were created by liquid-metal infiltration of alumina preforms with three-dimensional periodicity produced by a robotic deposition method. Volume-averaged lattice strains in the alumina phase were measured by synchrotron x-ray diffraction at various uniaxial compression stresses up to 350 MPa. Load transfer, which is experimentally found to occur between the aluminum and the alumina phase, is in agreement with simple rule of mixtures models. Spatially resolved measurements showed variations in load transfer at different positions within the composite for the elastic-, plastic-, and damage-deformation regimes. Using phase-enhanced imaging, the extent of damage within the composites was observed.

Original languageEnglish (US)
Article numberQ7.10
Pages (from-to)225-230
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume840
StatePublished - Jun 20 2005
EventNeutron and X-Ray Scattering as Probes of Multiscale Phenomena - Boston, MA, United States
Duration: Nov 29 2004Dec 1 2004

ASJC Scopus subject areas

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

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