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Journal of Materials Science

, Volume 29, Issue 22, pp 6033–6040 | Cite as

Interface contribution to the SiC-titanium and SiC-aluminium tensile strength prediction

Part I Interface characterization by fragmentation tests
  • L. Molliex
  • J. -P. Favre
  • A. Vassel
  • M. Rabinovitch
Article

Abstract

Fragmentation tests of single SiC filaments embedded in an aluminium (1050 and 5083 alloys) or a titanium (Ti-6Al-4V) matrix have been analysed in an effort to obtain the interface contribution in terms that could be incorporated into a tensile fracture model for unidirectional composites. Depending on the matrix, two regimes of interfacial stress transfer can be distinguished within the whole range of tested temperatures. For the SCS2/5083 system, plastic deformation of the alloy limits the stress transfer, and the interface contribution thus finds its expression in the shear stress of the matrix. for the SCS6/Ti-6Al-4V system, friction is the leading process and the interface contribution strongly depends on the stress state around the fibre. Assuming a temperature dependent compressive radial stress up to 925‡C, an effective transfer shear stress may be easily calculated for unidirectional SCS6/Ti-6Al-4V composites.

Keywords

Shear Stress Tensile Strength Fracture Model Radial Stress Tensile Fracture 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • L. Molliex
    • 1
  • J. -P. Favre
    • 1
  • A. Vassel
    • 1
  • M. Rabinovitch
    • 1
  1. 1.Materials Science DepartmentONERAChâtillonFrance

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