Long-Period Structures of Al-Rich Al-Ti Alloys


Long-period one-dimensional antiphase structures with average domain sizes of non-integral multiples (M=1.33 and M=1.50−1.91) of the basic L12 cell, existing in the Al3−xTi1+x(0<x>0.33) alloys, were studied by electron diffraction, high-resolution electron microscopy and X-ray diffraction. The mode of mixing of M=1 and M=2 domains was revealed and the nature of lattice modulation associated with the antiphase structure was clarified. A new type of superstructure Al5Ti3 was also studied by high-resolution electron microscopy and the structure model proposed previously was verified.

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  1. 1.

    W.B. Pearson, A Handbook of Lattice Spacing of Structures of metals and Alloys (Pergamon Press, Oxford 1964).

    Google Scholar 

  2. 2.

    M. Pötzschke and K. Schubert, Z. Metallkd. 53, 474–488, 548–561 (1962).

    Google Scholar 

  3. 3.

    A. Raman and K. Schubert, Z. Metallkd. 56, 44–52 (1965).

    CAS  Google Scholar 

  4. 4.

    F.J.J. Van Loo and G.D. Rieck, Acta Metall. 21, 61–71, 73–84 (1973).

    Article  Google Scholar 

  5. 5.

    R. Miida, M. Kasahara and D. Watanabe, Jpn. J. Appl. Phys. 19, L707–710 (1980).

    CAS  Article  Google Scholar 

  6. 6.

    R. Miida, S. Hashimoto and D. Watanabe, Sci. Rep. RITU A 29, Suppl. 1, 19–24 (1981).

    CAS  Google Scholar 

  7. 7.

    K. Fujiwara, J. Phys. Soc. Jpn. 12, 7–13 (1967).

    Article  Google Scholar 

  8. 8.

    R. Miida, S. Hashimoto and D. Watanabe, Jpn. J. Appl. Phys. 21, L59–61 (1982).

    CAS  Article  Google Scholar 

  9. 9.

    R. Miida, to be published.

  10. 10.

    K. Hiraga, D. Shindo and M. Hirabayashi, J. Appl. Cryst. 14, 185–190 (1981).

    CAS  Article  Google Scholar 

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Miida, R., Watanabe, D. Long-Period Structures of Al-Rich Al-Ti Alloys. MRS Online Proceedings Library 21, 247–252 (1983). https://doi.org/10.1557/PROC-21-247

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