Fatigue crack growth in SiC particle reinforced Al alloy matrix composites at high and low R-ratios by in situ X-ray synchrotron tomography

Peter Hruby, Sudhanshu S. Singh, Jason J. Williams, Xianghui Xiao, Francesco De Carlo, Nikhilesh Chawla

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Metal matrix composites (MMCs) offer high strength, high stiffness, low density, and good fatigue resistance, while maintaining cost an acceptable level. Fatigue resistance of MMCs depends on many aspects of composite microstructure. Fatigue crack growth behavior is particularly dependent on the reinforcement characteristics and matrix microstructure. The goal of this work is to obtain a fundamental understanding of fatigue crack growth behavior in SiC particle-reinforced 2080 Al alloy composites. In situ X-ray synchrotron tomography was performed on two samples at low (R = 0.1) and at high (R = 0.6) R-ratios. The resulting reconstructed images were used to obtain three-dimensional (3D) rendering of the particles and fatigue crack. Behaviors of the particles and crack, as well as their interaction, were analyzed and quantified. Four-dimensional (4D) visual representations were constructed to aid in the overall understanding of damage evolution.

Original languageEnglish (US)
Pages (from-to)136-143
Number of pages8
JournalInternational Journal of Fatigue
Volume68
DOIs
StatePublished - 2014

Fingerprint

Fatigue Crack Growth
Tomography
Fatigue crack propagation
Synchrotrons
Metal Matrix Composites
Composite
X rays
Fatigue
Microstructure
Composite materials
Fatigue Crack
Metals
Fatigue of materials
Reinforcement
Rendering
Stiffness
Crack
Damage
Three-dimensional
Dependent

Keywords

  • Fatigue
  • Metal-matrix composites (MMCs)
  • R-ratio
  • SiC particles
  • X-ray tomography

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Modeling and Simulation

Cite this

Fatigue crack growth in SiC particle reinforced Al alloy matrix composites at high and low R-ratios by in situ X-ray synchrotron tomography. / Hruby, Peter; Singh, Sudhanshu S.; Williams, Jason J.; Xiao, Xianghui; De Carlo, Francesco; Chawla, Nikhilesh.

In: International Journal of Fatigue, Vol. 68, 2014, p. 136-143.

Research output: Contribution to journalArticle

Hruby, Peter ; Singh, Sudhanshu S. ; Williams, Jason J. ; Xiao, Xianghui ; De Carlo, Francesco ; Chawla, Nikhilesh. / Fatigue crack growth in SiC particle reinforced Al alloy matrix composites at high and low R-ratios by in situ X-ray synchrotron tomography. In: International Journal of Fatigue. 2014 ; Vol. 68. pp. 136-143.
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