Skip to main content
SpringerLink
Log in

Damping studies of aging in Al-Cu

  • Published:
Metallurgical Transactions Aims and scope Submit manuscript

Abstract

Precipitation in an Al-3 pct Cu age-hardening alloy has been monitored at 130°C by ultrasonic pulse-echo measurements of attenuation and sonic velocity at 15 to 75 mHz and resonance bar damping and dynamic modulus measurements at 80 kHz. The use of two internal friction measurement techniques allows separation of the total damping loss into its component parts. Damping and modulus defect remain constant with time up to 100 hr, whereupon they begin to increase and reach a maximum at 250 hr. The observed time dependence is associated with scattering losses by precipitate particles and with increasing dislocation damping as dislocations become increasingly mobile during the depletion of their solute atmospheres by growing solute-rich precipitates.

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

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. K. M. Entwistle:J Inst. Metals, 1953, vol. 82, p. 149.

    Google Scholar 

  2. C. Chiou, H. Herman, and M. E. Fine:Trans. TMS-AIME, 1960, vol. 218, p. 299.

    CAS  Google Scholar 

  3. A. S. Nowick:Progr. MetalPhys., 1953, vol. 4, p. 1.

    Article  CAS  Google Scholar 

  4. R. Truell, C. Elbaum, and B. Chick:Ultrasonic Methods in Solid State Physics, pp. 53–151, Academic Press, New York, 1969.

    Google Scholar 

  5. J. M. Silcock, T. J. Heal, and H. K. Hardy:J. Inst. Metals, 1953, vol. 82, p. 239.

    Google Scholar 

  6. J. Marx:Rev. Sci. Instr., 1951, vol. 22, p. 503.

    Article  Google Scholar 

  7. W. D. Sylwestrowicz:J. Appl. Phys., 1966, vol. 37, p. 535.

    Article  CAS  Google Scholar 

  8. Metals Handbook, vol. I, p. 935, American Society for Metals, Metals Park, 1961.

  9. E. P. Papadakis:Physical Acoustics, vol. 4B, W. P. Mason, ed., Academic Press, New York, 1968.

    Google Scholar 

  10. A. Granato and K. Lücke:J. Appl. Phys., 1956, vol. 27, p. 583.

    Article  Google Scholar 

  11. R. B. Nicholson and J. Nutting:Phil. Mag., 1958, vol. 3, p. 531.

    CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Metallurgical Engineering and Materials Science, University of Notre Dame, 46556, Notre Dame, Ind.

    N. F. Fiore (Associate Professor and Chairman) & S. K. Gupta (Research Assistant)

Authors
  1. N. F. Fiore
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. S. K. Gupta
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Fiore, N.F., Gupta, S.K. Damping studies of aging in Al-Cu. Metall Trans 2, 1065–1070 (1971). https://doi.org/10.1007/BF02664237

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02664237

Keywords

Search

Navigation