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

The effect of neutron irradiation on the internal friction of copper


Measurements of internal friction at 1 Hz have been made on copper during continuous fast neutron irradiation at temperatures of 300, 378 and 500 K. Irradiation produced an initial increase followed by a decrease of the damping to a value below the pre-irradiation value. The decay of the damping which was interpreted in terms of the Granato-Lücke theory of strain amplitude-independent damping, was considered to be due to the decreased nobility of the dislocations through pinning by the irradiation produced point defects. Activation energies for diffusion of the defect to and along the dislocation was determined to be 0.58 and 0.38 eV respectively.

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


  1. 1.

    A. Granato andK. Lücke,J. Appl. Phys. 27 (1956) 583.

  2. 2.

    H. M. Simpson, A. Sosin,Phys. Rev. B5 (1972) 1382.

  3. 3.

    C. F. Burdett andH. Rahmatalla,J. Mater. Sci. 12 (1977) 843.

  4. 4.

    H. M. Simpson, A. Sosin andD. F. Johnson,Phys. Rev. B5 (1972) 1393.

  5. 5.

    H. Rahmatalla, Ph.D. University of Strathclyde, (1976).

  6. 6.

    A. H. Cottrell andB. A. Bilby,Proc. Phys. Soc. A62 (1949) 49.

  7. 7.

    D. O. Thompson, O. Buck, H. B. Huntington andR. S. Barnes,J. Appl. Phys. 38 (1967) 3051, 3057.

  8. 8.

    L. Meisel andD. O. Thompson,ibid 39 (1968) 3447.

  9. 9.

    A. C. Damask andG. J. Dienes, “Point Defects in Metals”, (Gordon and Breach, New York, 1963).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Rahmatalla, H., Burdett, C.F. The effect of neutron irradiation on the internal friction of copper. J Mater Sci 12, 2396–2400 (1977).

Download citation


  • Polymer
  • Copper
  • Activation Energy
  • Point Defect
  • Internal Friction