Journal of Materials Science

, Volume 29, Issue 15, pp 3913–3918 | Cite as

Structure, properties and response to heat treatment of melt-spun Al-Y and Al-La alloys

  • B. Dill
  • Y. Li
  • M. Al-Khafaji
  • W. M. Rainforth
  • R. A. Buckley
  • H. Jones


Al-Y and Al-La binary alloys containing 0.7–18 wt% (0.2–6.3 at%) Y and 0.9–18 wt% (0.2–4.2 at%) La, were rapidly solidified by chill-block melt-spinning to produce ribbons between 35 and 70 μm thick. Microstructures were of the classical zone A/zone B type with a notable increase in αAl lattice parameter for the Al-6.3 at% Y composition, which exhibited a Knoop hardness of 430±30 kg mm−2 as-spun. Isochronal ageing for 2 h at 200–500 °C gave significant hardening at 200 and/or 300 °C for all of the more concentrated alloys, the largest responses being produced by Al-6.3 at % Y and Al-4.2 at % La at 200 °C. X-ray diffraction asspun indicated the presence of only αAl and equilibrium Al11La3 in the Al-La alloy ribbons and αAl and a non-equilibrium Al4Y/Al11Y3 in the Al-Y ribbons. This non-equilibrium Al-Y phase was identified by X-ray diffraction as isomorphous with orthorhombic or tetragonal Al11 La3 with lattice parameters determined as ao = 0.42 ± 0.02 nm (bo = 1.26 ± 0.06 nm) and co = 0.97 ± 0.05 nm. TEM showed that it was present as an intercellular network with Energy dispersive spectroscopic analysis indicating an average composition Al-46 wt% Y consistent with the Al4Y/Al11Y3 stoichiometry and diffraction patterns consistent with an orthorhombic or tetragonal cell with these lattice parameters. While no significant change in phase constitution of the Al-La ribbons was detected by X-ray diffraction as a result of heat treatment, the Al11Y3 in Al-Y ribbons was seen to be replaced by βAI3Y on heat treatment at 400 and 500 °C.


Heat Treatment Binary Alloy Energy Dispersive Spectroscopic Analysis Average Composition Notable Increase 
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  1. 1.
    T. R. Anantharaman, P. Ramachandrarao, C. Suryanarayana, S. Lele and K. Chattopadhyay, Trans. Ind. Inst. Metals 30 (1977) 434.Google Scholar
  2. 2.
    J. Kaneko, T. Murakami and N. Furushiro, J. Jpn Inst. Metals 39 (1989) 147.CrossRefGoogle Scholar
  3. 3.
    H. Jones, Philos Mag. B 61 (1990) 487.CrossRefGoogle Scholar
  4. 4.
    S. J. Savage and F. H. Froes, in “Rapidly Solidified Metastable Materials”, edited by B. H. Kear and B. C. Griessen (Elsevier Science, NY, 1984) pp. 329–33.Google Scholar
  5. 5.
    M. X. Quan, P. Haldar, J. Werth and B. C. Giessen, in “Rapidly Solidified Alloys and their Mechanical and Magnetic Properties”, edited by B. C. Griessen, D. Polk and A. I. Taub (MRS, Pittsburgh, PA, 1986) pp. 299–304.Google Scholar
  6. 6.
    A. Ruder and D. Eliezer, Israel J. Technol. 24 (1988) 149.Google Scholar
  7. 7.
    A. Inoue, K. Ohtera and T. Masumoto, Jpn J. Appl. Phys. 27 (1988) L736.CrossRefGoogle Scholar
  8. 8.
    Idem, Sci. Rep RITU-A 35 (1990) 115.Google Scholar
  9. 9.
    A. Inoue, M. Watanabe, H. Kimura and T. Masumoto, ibid. 36 (1991) 59.Google Scholar
  10. 10.
    A. Ruder and D. Eliezer, J. Mater. Sci. Lett. 8 (1989) 725.CrossRefGoogle Scholar
  11. 11.
    Idem, J. Mater. Sci. 24 (1989) 1474.CrossRefGoogle Scholar
  12. 12.
    Q. Li, E. Johnson, A. Johansen and L. Sarholt-kristensen, J. Mater. Res. 7 (1992) 2756.CrossRefGoogle Scholar
  13. 13.
    Q. Li, E. Johnson, M. B. Madsen, A. Johansen and L. Sarholt-kristensen, Philos. Mag. B 66 (1992) 427.CrossRefGoogle Scholar
  14. 14.
    Y.-H. Kim, A. Inoue and T. Masumoto, Mater. Trans. JIM 32 (1991) 331.CrossRefGoogle Scholar
  15. 15.
    H. Jones, Mater. Sci. Eng. 5 (1969) 1.CrossRefGoogle Scholar
  16. 16.
    A. H. Gomes De Mesquita and K. H. J. Buschow, Acta Crystallogr. 22 (1967) 497.CrossRefGoogle Scholar
  17. 17.
    K. A. Gshneidner Jr and F. W. Calderwood, Bull. Alloy Phase Diagrams 9 (1988) 686.CrossRefGoogle Scholar
  18. 18.
    Idem, ibid. 10 (1989) 44.CrossRefGoogle Scholar
  19. 19.
    H. Jones, Scripta Metall. 17 (1983) 97.CrossRefGoogle Scholar
  20. 20.
    A. Fontaine, in “Rapidly Quenched Metals”, edited by N. J. Grant and B. C. Giessen (MIT Press, Cambridge, MA, 1976) pp. 163–7.Google Scholar
  21. 21.
    S. Dermarkar. in “Rapidly Solidified Powder Metallurgy Aluminium Alloys”, edited by M. E. Fine and E. A. Starke Jr, ASTM STP 890 (American Society for Testing and Materials, Philadelphia, PA, 1986) pp. 154–65.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • B. Dill
    • 1
  • Y. Li
    • 1
  • M. Al-Khafaji
    • 1
  • W. M. Rainforth
    • 1
  • R. A. Buckley
    • 1
  • H. Jones
    • 1
  1. 1.Department of Engineering MaterialsUniversity of SheffieldSheffieldUK

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