Skip to main content
SpringerLink
Log in

An AEM investigation of the formation of precipitate-free zones in an AI-16 Wt Pct Ag alloy: Determination of equilibrium and metastable solvus lines

  • Published:
Metallurgical Transactions A Aims and scope Submit manuscript

Abstract

Precipitation of the equilibrium y-phase at grain boundaries in an aged Al-16 wt pct (∼4.5 at. pct) Ag alloy is responsible for the formation of a solute depleted region, free of metastable Guinier-Preston (GP) zones, in the immediate vicinity of the grain boundary. Solute concentration profiles have been obtained across these grain boundary regions using Analytical Electron Microscopy (AEM) in thin foils of the alloy aged at low temperatures. The Ag concentrations at the grain boundary (between γ precipitates) and at the edge of the precipitate-free zone have been used to determine the solid solubility of Ag in Al (the α/(α + γ) solvus) and the metastable GP zone solvus line, respectively.

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. J.S. Kirkaldy:Can. J. Phys., 1958, vol. 36, p. 917.

    CAS  Google Scholar 

  2. A. D. Romig, Jr.: Ph.D. Dissertation, Lehigh University, Bethlehem, PA, 1979.

    Google Scholar 

  3. A.D. Romig, Jr. and J.I. Goldstein:Metall. Trans. A, 1980, vol. 11A, p. 1151.

    CAS  Google Scholar 

  4. C.H. Chen, M.R. Notis, and D.B. Williams: Proc. Intl. Conf. on Solid → Solid Phase Transformations, H.I. Aaronsonet al., eds., TMS-AIME, Warrendale, PA, 1983, p. 721.

    Google Scholar 

  5. P. Doig and J.W. Edington:Phil. Mag., 1973, vol. 28, p. 961.

    CAS  Google Scholar 

  6. H.B. Aaron and H.I. Aaronson:Acta Metall., 1968, vol. 16, p. 789.

    Article  CAS  Google Scholar 

  7. L. S. Darken and R.W. Gurry:Physical Chemistry of Metals, McGraw-Hill Book Co., New York, NY, 1953, p. 437.

    Google Scholar 

  8. P. Doig, J.W. Edington, and M.H. Jacobs:Phil. Mag., 1975, vol. 31, p. 285.

    CAS  Google Scholar 

  9. J.B. Clark:Acta Metall., 1964, vol. 12, p. 1197.

    Article  CAS  Google Scholar 

  10. M. Raghavan:Metall. Trans. A, 1980, vol. 11A, p. 993.

    CAS  Google Scholar 

  11. M. Hansen:Zeit. Metall., 1928, vol. 20, p. 217.

    CAS  Google Scholar 

  12. M. Hansen:Naturwissenschaften, 1928, vol. 16, p. 417.

    Article  CAS  Google Scholar 

  13. E. Crepaz:Congres Internationaux de Chimie Industrielle, Compte Rendu., Brussels, 1930, vol. III, p. 371.

    Google Scholar 

  14. D. W. Wakeman and G. V. Raynor:J. Inst. Metals, 1948-49, vol. 75, p. 131.

    CAS  Google Scholar 

  15. G. V. Raynor and D.W. Wakeman:Phil. Mag., 1949, vol. 40, p. 404.

    CAS  Google Scholar 

  16. L. Rotherham and L.W. Larke:J. Inst. Metals, 1952-53, vol. 81, p. 67.

    CAS  Google Scholar 

  17. R. O. Williams and D. S. Easton:Scripta Metall., 1974, vol. 8, p. 27.

    Article  CAS  Google Scholar 

  18. R.P. Elliott and F. A. Shunk:Bull. Alloy Phase Diagrams, 1980, vol. 1, p. 36.

    Google Scholar 

  19. G. Borelius and L. E. Larsson.Arkiv. für Fysik, 1956, vol. 11, p. 137.

    CAS  Google Scholar 

  20. R. Baur and V. Gerold:Zeit. Metall., 1961, vol. 52, p. 671.

    CAS  Google Scholar 

  21. R. Baur and V. Gerold:Acta Metall., 1962, vol. 10, p. 637.

    Article  CAS  Google Scholar 

  22. V. Gerold: “Metallic Solid Solutions: A Symposium on Their Electronic and Atomic Structure,” J. Friedel and A. Guninier, eds., Benjamin, New York, 1963, p. XL-1.

    Google Scholar 

  23. K.I. Hirano:Nippon Kinzoku Gakkaishi, Trans., 1967, vol. 10, p. 132.

    Google Scholar 

  24. S. M. Merchant, M. R. Notis, and D. B. Williams:Proc. Intl. Conf. onSolid →Solid Phase Transformations, H.I. Aaronsonet al., eds., TMS-AIME, Warrendale, PA, 1983, p. 733.

    Google Scholar 

  25. G. Cliff and G. W. Lorimer:J. Microscopy, 1975, vol. 103, p. 203.

    Google Scholar 

  26. S. M. Merchant, M. R. Notis, and D. B. Williams: Lehigh University, Bethlehem, PA, unpublished work, 1981.

  27. J.I. Goldstein, J.L. Costley, G.W. Lorimer, and S.J.B. Reed:Scanning Electron Microscopy, O. Johari, ed., IIT Research Institute, Chicago, IL, 1977, vol. 1, p. 315.

    Google Scholar 

  28. D. A. Rae, V. D. Scott, and G. Love:Quantitative Microanalysis with High Spatial Resolution, The Metals Society, London, 1981, p. 57.

    Google Scholar 

  29. A.D. Romig, Jr. and J.I. Goldstein:Metall. Trans. A, 1980, vol. 11A, p. 1151.

    CAS  Google Scholar 

  30. J.I. Goldstein:Introduction to Analytical Electron Microscopy, J.J. Hren, J.I. Goldstein, and D.C. Joy, eds., Plenum Press, New York, NY, 1979, p. 83.

    Google Scholar 

  31. J.I. Goldstein and D.B. Williams:Quantitative Microanalysis with High Spatial Resolution, The Metals Society, London, 1981, p. 5.

    Google Scholar 

  32. H. E. Bishop:Advances in Analysis of Microstructural Features by Electron-Beam Techniques, Proc. of a Joint Meeting of the Metals Society and the Institute of Physics, The Metals Society, London, 1974, p. 1.

    Google Scholar 

  33. D.B. Williams:38th Annual Proc. Electron Microscopy Soc. of Amer., G. W. Bailey, ed., San Francisco Press, San Francisco, CA, 1980, p. 82.

    Google Scholar 

  34. D.B. Williams and J.I. Goldstein:Proc. NBS Workshop on Energy Dispersive X-ray Spectrometry, 1979, NBS Publication No. 604, 1981, p. 341.

  35. G. Cliff and P. B. Kenway:17th Annual Proc. Microbeam Analysis Soc, K. F. J. Heinrich, ed., San Francisco Press, San Francisco, CA, 1982, p. 107.

    Google Scholar 

  36. N.J. Zaluzec, E.A. Kenik, and P.J. Maziasz:38th Annual Proc. Electron Microscopy Soc. of Amer., G.W. Bailey, ed., San Francisco Press, San Francisco, CA, 1980, p. 132.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Metallurgy and Materials Engineering, Whitaker Lab #5, Lehigh University, 18015, Bethlehem, PA

    Sailesh M. Merchant, Michael R. Notis & David B. Williams

Authors
  1. Sailesh M. Merchant
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Michael R. Notis
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. David B. Williams
    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

Merchant, S.M., Notis, M.R. & Williams, D.B. An AEM investigation of the formation of precipitate-free zones in an AI-16 Wt Pct Ag alloy: Determination of equilibrium and metastable solvus lines. Metall Trans A 14, 1825–1831 (1983). https://doi.org/10.1007/BF02645552

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02645552

Keywords

Search

Navigation