Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Initial dislocation distributions in tungsten fibre-copper composites

  • 132 Accesses

  • 135 Citations

Abstract

Etch-pit studies of composites consisting of small volume fractions of tungsten wires into which a copper matrix had been introduced by vacuum infiltration showed the dislocation density in the single crystal matrix to increase with volume fraction of fibre and to rise to high values toward the fibre-matrix interface. The dislocation distributions, which resulted from strains arising due to differential shrinkage, were interpreted in terms of a contribution, independent of fibre fraction, due to transverse strains which fall off with distance from the fibre and a second one due to axial strain which increases with fibre fraction but is invariant with distance from the fibre. Part of the axial adjustment is accomplished by interface shear.

This is a preview of subscription content, log in to check access.

References

  1. 1.

    J. R. Hancock, J. Composite Materials 1 (1967) 136.

  2. 2.

    J. R. Hancock and J. C. Grosskreutz, Metal Matrix Composites, ASTM STP 438 (1968) 134.

  3. 3.

    M. R. Pinnel and A. Lawley, Met. Trans. AIME 1 (1970) 1337.

  4. 4.

    G. Garmong and L. A. Shepard, ibid 2 (1971) 175.

  5. 5.

    F. W. Young and J. R. Savage, J. Appl. Phys. 35 (1964) 1971.

  6. 6.

    J. W. Mitchell, J. C. Chevrier, B. J. Hockey, and J. P. Monaghan, jr. Canad. J. Phys. 45 (1967) 453.

  7. 7.

    A. K. N. Reddy and H. Wilman, Trans. Inst. Metal Finishing 36 (1959) 97.

  8. 8.

    J. D. Livingston, Acta Metallurgica 10 (1962) 229.

  9. 9.

    H. Poritsky, Physics 5 (1934) 406.

  10. 10.

    A. W. Hull and E. E. Burger, ibid 5 (1934) 384.

  11. 11.

    A. Kelly and G. J. Davies, Metallurgical Reviews 10 (1965) 1.

  12. 12.

    J. Lankford, Jr. Ph.D. Thesis, University of Illinois, 1969.

  13. 13.

    A. Kellyand H. Lilholt, Phil. Mag. 20 (1969) 311.

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Chawla, K.K., Metzger, M. Initial dislocation distributions in tungsten fibre-copper composites. J Mater Sci 7, 34–39 (1972). https://doi.org/10.1007/BF00549547

Download citation

Keywords

  • Copper
  • Tungsten
  • Shrinkage
  • Dislocation Density
  • Small Volume