Journal of Materials Science

, Volume 28, Issue 19, pp 5355–5362 | Cite as

Morphological evolution of α/γ interface in Fe-Mn-Al alloy

  • J. G. Duh
  • S. C. Lin


Series of multiphase diffusion couples were assembled with various terminal α and γ alloys in a Fe-Mn-Al system. These couple series were employed to investigate the development of diffusion structures with planar and non-planar interfaces. Morphology in the diffusion interface was observed by scanning electron microscopy (SEM) and the concentration profile for the constituent element was obtained by electron probe X-ray microanalysis (EPMA) with the aid of quantitative analysis. Transitions from planar interfaces in the α/γ two-phase diffusion couples were indexed by varying the compositions of the terminal alloys. Couples with planar α/γ interfaces exhibited path crossings of the (α/γ) two-phase region parallel to tie-lines. However, the two-phase path crossings for couples developing non-planar interfaces were inclined to tie-lines. The α/γ phase boundary can be determined by the interfacial compositions of the diffusion couple in which the interface is planar.


Electron Probe Diffusion Couple Morphological Evolution Constituent Element Planar Interface 
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  1. 1.
    S. K. Banerji, in a Workshop on Trends in Critical Materials Requirements for Steels of the Future — Conservation and Substitution Technology for Chromium, Vanderbilt University, Nashville, Tennessee, October 1982.Google Scholar
  2. 2.
    J. P. Sauer, R. A. Rapp andJ. P. Hirth,Oxide. Met. 18 (1982) 285.CrossRefGoogle Scholar
  3. 3.
    P. Tomaszewicz andG. R. Wallwork,ibid. 20 (1983) 75.CrossRefGoogle Scholar
  4. 4.
    P. R. S. Jackson andG. R. Wallwork,ibid. 21 (1984) 135.CrossRefGoogle Scholar
  5. 5.
    J. G. Duh, C. J. Lin, J. W. Lee andC. M. Wan, in Proceedings of Alternate Alloying for Environmental Resistance, edited by G. R. Smolik and S. K. Banerji (The Metallurgical Society, Warrendale, Pennsylvania, 1987) p. 283.Google Scholar
  6. 6.
    J. G. Duh, C. J. Wang, C. M. Wan andB. S. Chiou,ibid.,in p. 291Google Scholar
  7. 7.
    C. J. Wang andJ. G. Duh,ibid.,23 (1988) 3447.Google Scholar
  8. 8.
    J. G. Duh andC. J. Wang,ibid.,25 (1990) 268.Google Scholar
  9. 9.
    Idem., ibid.,25 (1990) 2063.Google Scholar
  10. 10.
    C. J. Wang andJ. G. Duh,ibid. 23 (1988) 2913.Google Scholar
  11. 11.
    J. G. Duh, J. W. Lee andC. J. Wang,ibid. 23 (1988) 2649.Google Scholar
  12. 12.
    J. G. Duh andJ. W. Lee,J. Electrochem. Soc. 136 (1989) 847.CrossRefGoogle Scholar
  13. 13.
    C. J. Wang andJ. G. Duh,J. Mater. Sci. 23 (1988) 769.CrossRefGoogle Scholar
  14. 14.
    J. G. Duh andC. J. Wang,ibid. 25 (1990) 2615.CrossRefGoogle Scholar
  15. 15.
    J. B. Clark andF. N. Rhines,Trans. AIME 51 (1959) 199.Google Scholar
  16. 16.
    J. S. Kirkaldy andD. G. Fedak,Trans. AIME 224 (1962) 490.Google Scholar
  17. 17.
    G. H. Cheng andM. A. Dayananda,Met. Trans. 10A (1979) 1407.CrossRefGoogle Scholar
  18. 18.
    J. G. Duh, PhD. thesis, Purdue University 1983.Google Scholar
  19. 19.
    J. M. Oh andM. J. Mcnallan,J. Electrochem. Soc. 134 (1987) 1010.CrossRefGoogle Scholar
  20. 20.
    K. Nohara andK. Hirano, in Proceedings of International Conference on Science and Technology of Iron and Steel, p. 1267 (Japanese Institute of Iron and Steel, Tokyo, 1971).Google Scholar
  21. 21.
    K. Nohara andK. Hirano,Suppl. Trans. Iron Steel Inst. Jpn. 11 (1971) 1267.Google Scholar
  22. 22.
    R. E. Reed-Hill andR. Abbaschian, “Physical metallurgy principles”, 3rd. Edn (PWS-KENT, Boston, 1992).Google Scholar

Copyright information

© Chapman & Hall 1993

Authors and Affiliations

  • J. G. Duh
    • 1
  • S. C. Lin
    • 1
  1. 1.Department of Materials Science and EngineeringNational Tsing Hua UniversityHsinchuTaiwan

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