Journal of Materials Science

, Volume 41, Issue 3, pp 643–652 | Cite as

Microstructure development during dissimilar welding: Case of laser welding of Ti with Ni involving intermetallic phase formation

  • S. Chatterjee
  • T. A. Abinandanan
  • K. Chattopadhyay
Article

Abstract

Development of solidification microstructure in a laser welded Ti/Ni dissimilar binary couple is presented. At the fusion interfaces in both Ti and Ni, growth of the base metal grains into the weld pool is inhibited by the presence of composition gradients in the melt. Ti2Ni dendrites grow toward the base metal at the Ti fusion interface. In the Ni side, appearance of a nickel solid solution phase is followed by layers of Ni3Ti, Ni3Ti+NiTi eutectic, and NiTi. NiTi dendrites and Ti2Ni constitute the microstructure in the middle of the weld. Isolated titanium dendrites are observed throughout the weld, but their preferential occurrence toward the top surface of the weld is more prominent. Results are rationalised on the basis of interplay of the transport processes in the weld with the thermodynamics of the Ti-Ni system.

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References

  1. 1.
    S. A. DAVID, S. S. BABU and J. M. VITEK, JOM 55 (2003) 50.Google Scholar
  2. 2.
    J. N. DUPONT, S. W. BANOVIC and A. R. MARDER, Welding Journal 82 (2003) 125-s.Google Scholar
  3. 3.
    T. W. NELSON, J. C. LIPPOLD and M. J. MILLS, ibid. 79 (2000) 267-s.Google Scholar
  4. 4.
    M. SIREESHA, V. SHANKAR, K. A. SHAJU and S. SUNDARESAN, Mater. Sci. Eng. A 292 (2000) 74.Google Scholar
  5. 5.
    M. D. ROWE, T. W. NELSON and J. C. LIPPOLD, Welding Journal 78 (1999) 31-s.Google Scholar
  6. 6.
    T. W. NELSON, J. C. LIPPOLD and M. J. MILLS, ibid. 78 (1999) 329-s.Google Scholar
  7. 7.
    A. A. OMAR, ibid. 77 (1998) 86-s.Google Scholar
  8. 8.
    E. J. BARNHOUSE and J. C. LIPPOLD, ibid. 77 (1998) 477-s.Google Scholar
  9. 9.
    C. PAN and Z. ZHANG, Mater. Character. 36 (1996) 5.CrossRefGoogle Scholar
  10. 10.
    Z. SUN and T. MOISIO, J. Mater. Sci. Lett. 13 (1994) 802.CrossRefGoogle Scholar
  11. 11.
    Idem., Mater. Sci. Tech. 9 (1993) 603.Google Scholar
  12. 12.
    H. K. D. H. BHADESHIA, S. A. DAVID and J. M. VITEK, ibid. 7 (1991) 50.Google Scholar
  13. 13.
    T. A. MAI and A. C. SPOWAGE, Mater. Sci. Eng. A 374 (2004) 224.Google Scholar
  14. 14.
    T. LUIJENDIJK, J. Mater. Proc. Tech. 103 (2000) 29.CrossRefGoogle Scholar
  15. 15.
    B. MAJUMDAR, R. GALUN, A. WEISHEIT and B. L. MORDIKE, J. Mater. Sci. 32 (1997) 6191.CrossRefGoogle Scholar
  16. 16.
    Z. SUN and R. KARPPI, J. Mater. Proc. Tech. 59 (1996) 257.CrossRefGoogle Scholar
  17. 17.
    Z. SUN and J. C. ION, J. Mater. Sci. 30 (1995) 4205.CrossRefGoogle Scholar
  18. 18.
    P. S. LIU, W. A. BAESLACK and J. HURLEY, Weld. Journal 73 (1994) 175-s.Google Scholar
  19. 19.
    J. SERETSKY and E. R. RYBA, ibid. 55 (1076) 208-s.Google Scholar
  20. 20.
    G. PHANIKUMAR and K. CHATTOPADHYAY, Sci. Tech. Weld. Join. 10 (2005) 158.CrossRefGoogle Scholar
  21. 21.
    G. PHANIKUMAR, S. MANJINI, P. DUTTA, J. MAZUMDAR and K. CHATTOPADHYAY, Met. Mater. Trans. 36A (2005) 2137.Google Scholar
  22. 22.
    G. PHANIKUMAR, P. DUTTA and K. CHATTOPADHYAY, ibid. 35B (2004) 339.Google Scholar
  23. 23.
    P. S. WEI and F. K. CHUNG, ibid. 31B (2000) 1387.Google Scholar
  24. 24.
    E. A. BRANDES and G. B. BROOK (eds.), Smithels Reference Book, 7th ed. (Butterworth-Heinemann, Oxford, MA, 1992) p. 1040.Google Scholar
  25. 25.
    G. F. VANDER VOORT, in “Metallography: Principles and Practice” (Mc-Graw Hill Book Company, 1984).Google Scholar
  26. 26.
    M. GREMAUD, M. CARRARD and W. KURZ, Acta Mater. 38 (1990) 2587.CrossRefGoogle Scholar
  27. 27.
    W. KURZ and R. TRIVEDI, Met. Mater. Trans. 27A (1996) 625.Google Scholar
  28. 28.
    P. A. CARVALHO, A. M. DEUS, R. COLACO and R. VILLER, Acta Mater. 46 (1998) 1781.CrossRefGoogle Scholar
  29. 29.
    J. H. FERZIGER and M. PERIC in “Computational Methods for Fluid Dynamics,” 3rd ed. (Springer, 2002) p. 372.Google Scholar

Copyright information

© Springer Science + Business Media, Inc. 2006

Authors and Affiliations

  • S. Chatterjee
    • 1
  • T. A. Abinandanan
    • 1
  • K. Chattopadhyay
    • 1
  1. 1.Department of MetallurgyIndian Institute of ScienceBangaloreIndia

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