Application of positron annihilation spectroscopy to study recovery and recrystallization of commercial pure Al and Al-1 wt% Mn alloys

  • M. S. Abd El Keriem
  • M. Mohsen
  • M. H. Khalil
  • M. Abd El Wahab
  • A. S. Tana


Isochronal annealing of cold worked commercial pure aluminum (99.5%) and Al-1wt% Mn alloys was demonstrated between room temperature and 823 K. The stages of recovery and recrystallization were studied using microhardness and positron annihilation lifetime measurements. Apositive correlation was established between the variation of the intensity of long lived component and Vickers microhardness with annealing temperature during the two stages of recovery, which were identified in both aluminum and Al(Mn). The retardation of the recovery stages and recrystallization in Al(Mn) alloys is interpreted in terms of precipitation of aluminum-manganese particles as well as manganese-vacancy interaction.


aluminum alloys positron annihilation recovery recrystallization 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    P. Cotterill and P.R. Mould,Recrystallization and Grain Growth in Metals, John Wiley & Sons, 1976, p 136–141Google Scholar
  2. 2.
    W. Triftshauser, Microscopic Methods in Metals,Positron Annihilation, U. Gonser, Ed., Springer-Velag, Berlin, Germany, Vol 40, 1986, p 249–295Google Scholar
  3. 3.
    A. Somoza, R. Romero, and W. Salgueiro, Quenched-in: Defects in Β-Cu-Zn-Al Alloys. APositron Lifetime Study,Mater. Sci. Forum, Vol. 105–110, 1992, p 1241–1244Google Scholar
  4. 4.
    H.M. Fretwell, J.A. Duffy, M.A. Alam, and H.V. Leighly, Solute Clustering in Al-Li Alloys,Mater. Sci. Forum, Vol 175–178, 1995, p 359–362Google Scholar
  5. 5.
    G.M. Hood and R.J. Schultz, Positron Annihilation Studies of Quenching and Recovery of Single Crystals of Al and Al-1.5 X 10-2 at % Mn,Can. J. Phys., Vol 60, 1982, p 1117–1124Google Scholar
  6. 6.
    T. Gorecki, Positron Lifetime in Metals,Mater. Sci. Forum, Vol 105-110, 1992, p 643–647Google Scholar
  7. 7.
    S. Mantl, W. Resternich, and W. Triftshauser, Defect Specific Temperature Dependence of Positron Trapping,J. Nucl. Mater, Vol 69–70, 1978, p 593–595CrossRefGoogle Scholar
  8. 8.
    H. Murakami, T. Endo, and I. Matsuda, Positron Annihilation at Defects in Quenched Al,Mater. Sci. Forum, Vol 1052-110, 1992, p 1161–1164Google Scholar
  9. 9.
    V.W. Lindberg, J.D. McGervey, R.W. Hendricks, and W. Triftshauser, Annealing Studies of Voids in Neutron Irradiated Al Single Crystals by Positron Annihilation,Philos. Mag. A, Vol. 36, (No. 1), 1977, p 117–128CrossRefGoogle Scholar
  10. 10.
    N. de Diego, D. Segers, L. Dorikens-Vanpraet, J. del Rio, and M. Dorikens, Recovery Process in Deformed Li-Rich Al Alloy,Mater. Sci. Forum, Vol 105–110, 1992, p 945–948Google Scholar
  11. 11.
    J. del Rio and N. de Diego, The Influence of Li in the Nucleation of Vacancy Loops in an Al-Li Alloy,Mater. Sci. Forum, Vol 105–110, 1992, p 965–968Google Scholar
  12. 12.
    U.H. Glaser, G. Dlubek, and R. Krause, Positron Trapping by The Platelet Precipitations of Al Cu,Mater. Sci. Forum, Vol 105–110, 1992, p 1025–1028Google Scholar
  13. 13.
    S. Abis, P. Bartolomei, M. Biasini, A. Dupasquier, A. Somoza, and M. Valli, Positron Annihilation Study on Age-Hardened Al-Alloys,Mater. Sci. Forum, Vol 105–110, 1992, p 875–878Google Scholar
  14. 14.
    G. Dlubek, H. Krause, S. Krause, and P. Lademann, Positron Studies of Decomposition in Al-Li Based Alloys,Mater. Sci. Forum, Vol 105–110, 1992, p 977–980Google Scholar
  15. 15.
    C. Szeles and A. Vertes, Defect Recovery in DC-Cast and Hot-Rolled Al-Mn (Fe-Si-Cu) Alloys,Mater. Sci. Forum, Vol 105–110, 1992, p 1265–1270CrossRefGoogle Scholar
  16. 16.
    P. Hautojarvi, A. Tamminen, and P. Jauho, Trapping of Positrons by Dislocations in Al,Phys. Rev. Lett, Vol 24, 1970, p 459–461CrossRefGoogle Scholar
  17. 17.
    K. Saarinen, P. Hautojarvi, A. Vehanen, R. Krause, and G. Dlubek, Shallow Ga AS,Phys. Rev. B, Condens. Matter, Vol 39, 1989, p 5287–5296Google Scholar
  18. 18.
    K. Petersen, Studies of Non Equilibrium Defects in Metals,Positron Solid-State Physics, W. Brandt and A. Dupasquier, Ed., North Holland, Amsterdam, 1983, p 298–356Google Scholar
  19. 19.
    P. Hautojarvi, J. Heinio, M. Manninen, and R.M. Nieminen, The Effect of Microvoid Size on Positron Annihilation Characteristics and Residual Resistivity in Metals,Philos. Mag., A, Vol 35 (No 4), 1977, p 973–981CrossRefGoogle Scholar
  20. 20.
    L.F. Mondalfo,Al Alloys-Structures and Properties, Butterworths, London, England, 1976, p 197–210Google Scholar
  21. 21.
    G.M. Hood and R.J. Schultz, The Diffusion of Mn in Al,Philos. Mag. A, Vol 23, 1971, p 1479–1490CrossRefGoogle Scholar

Copyright information

© ASM International 1998

Authors and Affiliations

  • M. S. Abd El Keriem
    • 1
  • M. Mohsen
    • 1
  • M. H. Khalil
    • 1
  • M. Abd El Wahab
    • 2
  • A. S. Tana
    • 3
  1. 1.Physics Dept, Faculty of ScienceAin Shams UniversityCairoEgypt
  2. 2.Physics Dept., Faculty of GirlsAin Shams UniversityCairoEgypt
  3. 3.Metallurgy Dept.Atomic Energy AuthorityCairoEgypt

Personalised recommendations