Three-dimensional microstructure visualization of porosity and fe-rich inclusions in sic particle-reinforced al alloy matrix composites by x-ray synchrotron tomography

Flá Vio De Andrade Silva, Jason J. Williams, Bernd R. Müller, Manfred P. Hentschel, Pedro D. Portella, Nikhilesh Chawla

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Microstructural aspects of composites such as reinforcement particle size, shape, and distribution play important roles in deformation behavior. In addition, Fe-rich inclusions and porosity also influence the behavior of these composites, particularly under fatigue loading. Three-dimensional (3-D) visualization of porosity and Fe-rich inclusions in three dimensions is critical to a thorough understanding of fatigue resistance of metal matrix composites (MMCs), because cracks often initiate at these defects. In this article, we have used X-ray synchrotron tomography to visualize and quantify the morphology and size distribution of pores and Fe-rich inclusions in a SiC particle-reinforced 2080 Al alloy composite. The 3-D data sets were also used to predict and understand the influence of defects on the deformation behavior by 3-D finite element modeling.

Original languageEnglish (US)
Pages (from-to)2121-2128
Number of pages8
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume41
Issue number8
DOIs
StatePublished - Aug 1 2010

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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