Synchrotron X-ray diffraction measurements of internal stresses during loading of steel-based metal matrix composites reinforced with TiB2 particles

D. H. Bacon, L. Edwards, J. E. Moffatt, M. E. Fitzpatrick

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

High-energy synchrotron X-ray diffraction was used to measure the internal strain evolution in the matrix and reinforcement of steel-based metal matrix composites reinforced with particulate titanium diboride (TiB2). Two systems were studied: a 316L matrix with 25% TiB2 by volume and a W1.4418 matrix with 10% reinforcement. In situ loading experiments were performed, where the materials were loaded uniaxially in the X-ray beam. The results show the strain partitioning between the phases in the elastic regime, and the evolution of the strain partitioning once plasticity occurs. The results are compared with results from Eshelby modelling, and very good agreement is seen between the measured and modelled response for elastic loading of the material. Heat treatment of the 316-based material did not affect the elastic internal strain response.

Original languageEnglish
Pages (from-to)3373-3383
Number of pages11
JournalActa Materialia
Volume59
Issue number9
Early online date5 Mar 2011
DOIs
Publication statusPublished - 1 May 2011
Externally publishedYes

Keywords

  • Internal stresses
  • Metal matrix composites (MMCs)
  • Particulate-reinforced composites
  • Synchrotron radiation

ASJC Scopus subject areas

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

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