Journal of Materials Science

, Volume 11, Issue 9, pp 1667–1679 | Cite as

An electron microscopy study of the metastable structures in splat-cooled erbium-zirconium alloys

  • G. H. Narayanan
  • R. Wang


The metastable structures produced by splat-cooling in Er-Zr alloys were investigated by using transmission electron microscopy and X ray analysis in order to deduce the mechanism by which a continuous series of supersaturated solid solutions are formed between Er and Zr in their low temperature h c p allotropic form. The study revealed that the microstructure of alloys with extended solid solubility consisted of an h c p phase exhibiting predominantly martensitic character together with small amounts of a metastable beta phase. The volume fraction of the martensitic phase increased and that of the beta phase decreased with increase in Zr content of the alloy. The phase transformations involved in the formation of the various metastable phases in the Er-Zr system during splat cooling and the stability of these phases during subsequent ageing treatments are discussed in relation to the equilibrium phase diagram for this system.


Transmission Electron Microscopy Phase Diagram Equilibrium Phase Electron Microscopy Study Solid Solubility 
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  1. 1.
    P. Duwez andR. H. Willens,Trans. Met. Soc. AIME 227 (1963) 362.Google Scholar
  2. 2.
    R. P. Elliot, “Construction of Binary Alloys”, 1st Supplement (McGraw-Hill, New York, 1965) p. 409.Google Scholar
  3. 3.
    R. Wang,Appl. Phys. Letters 17 (1970) 460.Google Scholar
  4. 4.
    Idem, Met. Trans. 3 (1972) 1213.Google Scholar
  5. 5.
    R. Stoering andH. Conrad,Acta met. 17 (1969) 933.Google Scholar
  6. 6.
    P. Furrer andH. Warlimont, Proceedings of the 7th International Conference on Electron Microscopy, Grenoble, France (1970) p. 507.Google Scholar
  7. 7.
    D. Turnbull andK. N. Tu, “Phase Transformation” (American Society for Metals, Metals Park, 1970) p. 487.Google Scholar
  8. 8.
    D. J. Cometto, G. L. Houze andR. F. Hehemann,Trans. Met. Soc. AIME 233 (1965) 30.Google Scholar
  9. 9.
    W. Pitsch,J. Inst. Metals 87 (1958–59) 444.Google Scholar
  10. 10.
    D. Hull,Phil. Mag. 7 (1962) 537.Google Scholar
  11. 11.
    P. Duwez,ASM. Trans. Quart. 60 (1967) 607.Google Scholar
  12. 12.
    J. C. Williams, “Titanium Science and Technology”, Vol. 3, edited by R. I. Jafee and H. M. Butte (Plenum, New York, 1974).Google Scholar
  13. 13.
    R. B. Nicholson andJ. Nutting,Acta Met. 9 (1961) 332.Google Scholar
  14. 14.
    Y. Murakami andO. Kawano,Mem. Fac. Kyoto Univ. 21 (1959) 393.Google Scholar

Copyright information

© Chapman and Hall 1976

Authors and Affiliations

  • G. H. Narayanan
    • 1
  • R. Wang
    • 1
  1. 1.Department of Materials ScienceUniversity of Southern CaliforniaLos AngelesUSA

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