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Journal of Materials Science

, Volume 41, Issue 17, pp 5548–5555 | Cite as

Investigations on the high cycle fatigue behaviour of stir cast AA 6061-SiCp composites

  • K. Mahadevan
  • K. Raghukandan
  • T. Senthilvelan
  • B. C. Pai
  • U. T. S. Pillai
Article

Abstract

The room temperature high cycle fatigue behaviour of stir cast AA 6061-SiCp composites, with varying reinforcement percentage, is studied. The specimens were tested under fully reversed cyclic deformation in the peak aged condition. Composite with 20% reinforcement exhibit superior fatigue strength over other composites (with 10,15 and 25% reinforcement). The experimental results are correlated with scanning electron micrographs of the failed specimens. Two distinct morphologies namely, crack initiation/ propagation and fast fracture region, were present. Mode-I type cracking was found to have dominated the crack initiation. The final fracture mode was found to be ductile with nucleation, growth and coalescence of cracks in the matrix.

Keywords

Fatigue Crack Initiation Fatigue Strength High Cycle Fatigue High Cycle Fatigue 

Notes

Acknowledgements

This research was supported by the Council of Scientific and Industrial Research, India (CSIR GRANT NO.70/(0043)/01/EMR-II). The authors are thankful to the Materials Processing Division, Regional Research Laboratory, Thiruvananthapuram, India for providing the materials used in this research work.

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • K. Mahadevan
    • 1
  • K. Raghukandan
    • 2
  • T. Senthilvelan
    • 1
  • B. C. Pai
    • 3
  • U. T. S. Pillai
    • 3
  1. 1.Department of Mechanical EngineeringPondicherry Engineering CollegePondicherryIndia
  2. 2.Department of Manufacturing EngineeringAnnamalai UniversityAnnamalai NagarIndia
  3. 3.Metals Processing DivisionRegional Research LaboratoryThiruvananthapuramIndia

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