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Precipitation of guinier- preston zones in aluminum- magnesium; a calorimetric analysis of liquid-Quenched and solid-Quenched alloys

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Abstract

A calorimetric analysis of precipitation in liquid-quenched (LQ; rapidly solidified) and solid-quenched (SQ; quenched after solution heat treatment) AlMg alloys was made. Nonisothermal annealing (constant heating rate) experiments (differential scanning calorimetry) were performed using specimens of various compositions (12 to 17 at. Pct Mg) aged at fixed temperatures (293 to 353 K) during variable times (up to 3 years). Constraints to be imposed on the heating rates to be applied were discussed. Attention was paid in particular to the formation on aging and dissolution on subsequent annealing of Guinier-Preston (GP) zones. Quantitative analysis of the heat of dissolution of GP-zones led to estimates for the GP-zone solvus and the enthalpy of formation of GP-zones. The kinetics of formation and dissolution of GP-zones can be interpreted in terms of nucleation and excess-vacancy enhanced diffusion of magnesium. Rates of formation and dissolution of GP-zones are higher for SQ-alloys than for LQ-alloys, which is caused by a higher amount of excess vacancies retained after drastic SQ as compared to LQ by melt spinning where cooling in the last part of the quench can be relatively slow. The activation energy of GP-zone dissolution is generally smaller than that of GP-zone formation, which is interpreted in terms of a precipitation model where vacancy voids/loops, formed during quenching and/or in the beginning of aging, become unstable at temperatures where the GP-zones dissolve. As compared to the precipitation of GP-zones, the precipitation of β′/β particles showed an “opposite” kinetic behavior: it starts earlier in the LQ-alloys than in the SQ-alloys, which is ascribed to heterogeneous nucleation at structural heterogeneities (as grain boundaries) present with a higher density in the LQ-alloys.

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References

  1. J.L. Murray:Bull. Alloy Phase Diagram, 1982, vol. 3, pp. 60–74.

    Google Scholar 

  2. W. A. Pollard:J. Inst. Met., 1964-65, vol. 93, pp. 339–46.

    Google Scholar 

  3. M. Roth and J. M. Raynal:J. Appl. Cryst., 1974, vol. 7, pp. 219–21.

    Article  CAS  Google Scholar 

  4. K. Osamura and T. Ogura:Metall. Trans. A, 1984, vol. 15A, pp. 835–42.

    CAS  Google Scholar 

  5. R. Nozato and S. Ishihara:Trans. Jpn. Inst. Met., 1980, vol. 21, pp. 580–88.

    CAS  Google Scholar 

  6. A. Dauger, E.K. Boudili, and M. Roth:Scripta Metall., 1976, vol. 10, pp. 1119–24.

    Article  CAS  Google Scholar 

  7. E. K. Boudili, M. F. Denanot, and A. Dauger:Scripta Metall., 1977, vol. 11, pp. 543–48.

    Article  CAS  Google Scholar 

  8. P. van Mourik, Th.H. de Keijser, and E.J. Mittemeijer:Proc. Int. Conf. on Rapidly Solidified Materials, San Diego, CA, Feb. 3–5, 1986, P. W. Lee and R. S. Carbonara, eds., ASM, pp. 341-50.

  9. S.C. Agarwal and H. Herman: Aluminium, 1978, vol. 54, pp. 257–60.

    CAS  Google Scholar 

  10. P. van Mourik, E. J. Mittemeijer, and Th. H. de Keijser:J. Mater. Sci., 1983, vol. 18, pp. 2706–20.

    Article  Google Scholar 

  11. F. Thoyama, H. Okuda, K. Osamura, and H. Shingu:Proc. 91st Annual Meeting of Japan Inst. Metals, Z. Yamamoto, ed., 1982, p. 145.

  12. M. van Rooyen, J. A. van der Hoe ven, L. Katgerman, P. van Mourik, Th. H. de Keijser, and E.J. Mittemeijer: inProc. of the P.M.-Aerospace Mater. Conf., Berne, Switzerland, edited by Metal Powder Report, Nov. 1984, vol. 1, pp. 34-1-16.

  13. L. V. Meisel and P. J. Cote:Acta Metall., 1983, vol. 31, pp. 1053–59.

    Article  CAS  Google Scholar 

  14. D. Dollimore:The State of the Art of Thermal Analysis, O. Menis, H. Rook, and P.D. Garn, eds., Nat. Bur. Stand., Spec. Publ. 580, U.S. Government Printing Office, Washington, DC, 1980, pp. 1–31.

    Google Scholar 

  15. J.M. Papazian:Metall. Trans. A, 1982, vol. 13A, pp. 761–69.

    Google Scholar 

  16. Z. Katz and N. Ryum:Scripta Metall., 1981, vol. 15, pp. 265–68.

    Article  CAS  Google Scholar 

  17. M. Bernole, J. Raynal, and R. Graf:J. Microscopie, 1969, vol. 8, pp. 831–40.

    CAS  Google Scholar 

  18. G.W. Lorimer and R.B. Nicholson:Acta Metall., 1966, vol. 14, pp. 1009–13.

    Article  CAS  Google Scholar 

  19. M. van Rooyen, N.M. van der Pers, L. Katgerman, Th.H. de Keijser, and E.J. Mittemeijer: inProc. 5th Int. Conf. Rap. Quenched Metals, Würzburg, West Germany, Sept. 3–7, 1984, S. Steeb and H. Warlimont, eds., pp. 823-26.

  20. J. H. Driver and J. M. Papazian:Mater. Sci. and Eng., 1985, vol. 76, pp. 51–56.

    Article  CAS  Google Scholar 

  21. M. Hillert:J. Physique Radium, 1962, vol. 23, pp. 835–40.

    CAS  Google Scholar 

  22. J.W. Cahn:Acta Metall., 1962, vol. 10, pp. 907–13.

    Article  CAS  Google Scholar 

  23. Metals Reference Book, 5th ed., C. J. Smithells, ed., Butterworth's, London, 1976, p. 977.

    Google Scholar 

  24. L. F. Mondolfo:Aluminium Alloys: Structure and Properties, Butter- worth's, London, 1976, p. 314.

    Google Scholar 

  25. M. Bishop and K. E. Fletcher:Int. Met. Rev., 1972, vol. 17, pp. 203–25.

    CAS  Google Scholar 

  26. W. De Sorbo and D. Turnbull:Acta Metall., 1959, vol. 7, pp. 83–85.

    Article  Google Scholar 

  27. E. J. Mittemeijer, Liu Cheng, P. J. van der Schaaf, C. M. Brakman, and B.M. Korevaar:Metall. Trans. A, 1988, vol. 19A, pp. 925–32.

    CAS  Google Scholar 

  28. E.J. Mittemeijer, A. van Gent, and P.J. van der Schaaf:Metall. Trans. A, 1986, vol. 17A, pp. 1441–45.

    CAS  Google Scholar 

  29. E. Ozawa and H. Kimura:Acta Metall., 1970, vol. 18, pp. 995–1004.

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Laboratory of Metallurgy, Delft University of Technology, Rotterdamseweg 137, 2628, AL Delft, The Netherlands

    M. van Rooyen (Graduate Student) & J. A. Sinte Maartensdijk (Professor)

  2. Kemira B. V., Moezelweg 151, 3198, LS Rozenburg, The Netherlands

    E. J. Mittemeijer

Authors
  1. M. van Rooyen
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  2. J. A. Sinte Maartensdijk
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  3. E. J. Mittemeijer
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Formerly Student at the Laboratory of Metallurgy of the Delft University of Technology.

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van Rooyen, M., Maartensdijk, J.A.S. & Mittemeijer, E.J. Precipitation of guinier- preston zones in aluminum- magnesium; a calorimetric analysis of liquid-Quenched and solid-Quenched alloys. Metall Trans A 19, 2433–2443 (1988). https://doi.org/10.1007/BF02645471

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  • DOI: https://doi.org/10.1007/BF02645471

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