Metallurgical and Materials Transactions A

, Volume 15, Issue 6, pp 1129–1136 | Cite as

The Structure of Extruded NiAl

  • I. Baker
  • E. M. Schulson
Alloy Phases and Structure

Abstract

The deformation structure of Ni-rich NiAl extruded at 550°C has been characterized by transmission electron microscopy and by optical microscopy. Dislocations having a«100» Burgers vectors were found as complex networks, tangles, and prismatic loops. a«110» dislocations which were rare, were concluded to arise from reactions of a«100» dislocations. Evidence of recovery and recrystallization was obtained. Extrusion was deemed to have been possible by the operation ofhk0 «001» slip systems (often in plane strain flow) plus diffusion-assisted processes.

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References

  1. 1.
    A. H. Cottrell:Trans. TMS-AME, 1958, vol. 212, p. 192.Google Scholar
  2. 2.
    E.M. Schulson:Res Mech. Letters, 1981, vol. 1, p. 111.Google Scholar
  3. 3.
    G. R. Haff and E. M. Schulson:Metall. Trans. A, 1982, vol. 13A, p. 1563.CrossRefGoogle Scholar
  4. 4.
    E.M. Schulson and D. R. Barker:Scripta Met., 1983, vol. 17, p. 519.CrossRefGoogle Scholar
  5. 5.
    A. Ball and R. E. Smallman:Acta Metall., 1966, vol. 14, p. 1517.CrossRefGoogle Scholar
  6. 6.
    W. R. Kanne, Jr., P. R. Strutt, and R. A. Dodd:Trans. TMS-AIME, 1969, vol. 245, p. 1259.Google Scholar
  7. 7.
    R. J. Wasilewski, S. R. Butler, and J. E. Hanlon:Trans. TMS-AIME, 1967, vol. 239, p. 1357.Google Scholar
  8. 8.
    R. T. Pascoe and W. A. Newey:Phys. Stat. Sol., 1968, vol. 29, p. 357.CrossRefGoogle Scholar
  9. 9.
    M.H. Loretto and R. J. Wasilewski:Phil. Mag., 1971, vol. 23, p. 1311.CrossRefGoogle Scholar
  10. 10.
    E. M. Schulson and E. Teightsoonian:Phil. Mag., 1969, vol. 19, p. 155.CrossRefGoogle Scholar
  11. 11.
    R. Von Mises:Z. Angew. Math. Mech., 1928, vol. 8, p. 161.CrossRefGoogle Scholar
  12. 12.
    A. Ball and R. E. Smallman:Acta Metall., 1966, vol. 14, p. 1349.CrossRefGoogle Scholar
  13. 13.
    R.T. Pascoe and C.W.A. Newey:Metal Science, 1968, vol. 2, p. 138.CrossRefGoogle Scholar
  14. 14.
    W.F. Hosford, Jr.:Trans. TMS-AIME, 1964, vol. 230, p. 12.Google Scholar
  15. 15.
    J.F. Peck and D.A. Thomas:Trans. TMS-AIME, 1961, vol. 221, p. 1240.Google Scholar
  16. 16.
    G. W. Marshall and J. O. Brittain:Metall. Trans. A, 1976, vol. 7A, p. 1013.CrossRefGoogle Scholar
  17. 17.
    W. Yang, R.A. Dodd, and P. R. Strutt:Metall. Trans., 1972, vol. 3, p. 2049.CrossRefGoogle Scholar
  18. 18.
    N.J. Zaluzec and H. L. Fraser:Scripta Met., 1974, vol. 8, p. 1049.CrossRefGoogle Scholar
  19. 19.
    A. Lasalmonie:J. Mat. Sci., 1982, vol. 17, p. 2419.CrossRefGoogle Scholar
  20. 20.
    C.H. Lloyd and M.H. Loretto:Phys. Stat. Sol., 1970, vol. 39, p. 163.CrossRefGoogle Scholar
  21. 21.
    U. F. Kocks and H. Chandra:Acta Metall., 1982, vol. 30, p. 695.CrossRefGoogle Scholar
  22. 22.
    A. Ball and R. E. Smallman:Acta Metall., 1968, vol. 16, p. 233.CrossRefGoogle Scholar

Copyright information

© The Metallurgical of Society of AIME 1984

Authors and Affiliations

  • I. Baker
    • 1
  • E. M. Schulson
    • 1
  1. 1.Thayer School of EngineeringDartmouth CollegeHanover

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