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Precipitation Hardening of Mg-Zn and Mg-Zn-RE alloys

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Abstract

The age-hardening response of two cast Mg-Zn-RE alloys has been investigated and compared with that of a binary Mg-Zn alloy. The microstructures of the aged specimens were examined by analytical electron microscopy. Formation of a fine dispersion of rodlikeβ ′1 precipitates is the main cause for age hardening, while extensive precipitation of disc-shapedβ ′2 coincides with the onset of overaging. Rare earth additions retard the formation ofβ ′2 precipitates and thus postpone overaging. Four different orientation relationships betweenβ ′2 precipitates and matrix were found and explained in terms of the near-CSL model.

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References

  1. J.B. Clark and F.N. Rhines:J. Met., 1957, vol. 209, pp. 425–30.

    Google Scholar 

  2. Nair K. Suseelan and M.C. Mittal:Mater. Sci. Forum, 1988, vol. 30, pp. 89–103.

    Article  Google Scholar 

  3. M.J. Miles:Pres. Ann. Nat. For. Amer. Helicopter Soc, Washington, D.C., May, 1977.

  4. B. Lagowski:AFS Trans., 1977, vol. 85, pp. 237–40.

    CAS  Google Scholar 

  5. Metals Handbook 9th ed., ASM INTERNATIONAL, Metals Park, OH, 1979, vol. 2, pp. 526 and 579.

  6. L. Sturkey and J.B. Clark:J. Inst. Met., 1959–60, vol. 88, pp. 177–81.

    Google Scholar 

  7. J.B. Clark: ActaMetall., 1965, vol. 13, pp. 1281–89.

    Article  CAS  Google Scholar 

  8. J. Gallot and R. Graf:Comptes Rendu, 1965, vol. 261B, pp. 728–31.

    Google Scholar 

  9. J. Gallot, K. Lal, R. Graf, and A. Guinier:Comptes Rendu, 1965, vol. 258B, pp. 2818–20.

    Google Scholar 

  10. E.O. Hall:J. Inst. Met., 1968, vol. 96, pp. 21–27.

    CAS  Google Scholar 

  11. G. Mima and Y. Tanaka:Trans. Jpn. Inst. Met., 1971, vol. 12, pp. 71–75.

    Google Scholar 

  12. G. Mima and Y. Tanaka:Trans. Jpn. Inst. Met., 1971, vol. 12, pp. 76–81.

    Google Scholar 

  13. G. Mima and Y. Tanaka:Trans. Jpn. Inst. Met., 1971, vol. 12, pp. 317–22.

    Google Scholar 

  14. G. Mima and Y. Tanaka:Trans. Jpn. Inst. Met., 1971, vol. 12, pp. 323–28.

    Google Scholar 

  15. L.Y. Wei, G.L. Dunlop, and H. Westengen: Luleå University of Technology, Luleå, Sweden, unpublished research, 1993.

  16. L.Y. Wei and G.L. Dunlop:New Materials and Processes, Proc. 5th SSMS, I.L.H. Hansson and H. Liholt, eds., Danish Society for Materials Testing and Research, The House of Engineers, Copenhagen, 1989, pp. 721–28.

  17. A.A. Nayeb-Hashemi and J.B. Clark:Bull. Alloy Phase Diagrams, 1988, vol. 9 (2), pp. 162–72.

    Google Scholar 

  18. W. Bollmann:Crystal Defects and Crystalline Interfaces, Springer, Berlin, 1970, pp. 143–228.

  19. R.W. Balluffi, A. Brokman, and A. H.King: Acta Metall., 1982, vol. 30, pp. 1453–70.

    Article  CAS  Google Scholar 

  20. R. Wang and G.L. Dunlop: ActaMetall., 1984, vol. 32, pp. 1591–99.

    Article  Google Scholar 

  21. H. Grimmer:Scripta Metall., 1974, vol. 8, pp. 1221–23.

    Article  Google Scholar 

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Authors and Affiliations

  1. Department of Engineering Materials, Lulea University of Technology, S 971 87, Lulea, Sweden

    L. Y. Wei (Senior Research Scientist)

  2. University of Queensland, Z 4072, Australia

    G. L. Dunlop (Professor Department of Miningand Metallurgical Engineering, and Director,CRC for Alloy andSolidification Technology (CAST)

  3. Department of Magnesium Materials Technology Norsk Hydro a. s, Research Centre Porsgrunn, N-3901, Porsgrunn, Norway

    H. Westengen (Section Manager)

Authors
  1. L. Y. Wei
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  2. G. L. Dunlop
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  3. H. Westengen
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Wei, L.Y., Dunlop, G.L. & Westengen, H. Precipitation Hardening of Mg-Zn and Mg-Zn-RE alloys. Metall Mater Trans A 26, 1705–1716 (1995). https://doi.org/10.1007/BF02670757

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  • DOI: https://doi.org/10.1007/BF02670757

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