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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S. A. DAVID, S. S. BABU and J. M. VITEK, JOM 55 (2003) 50.
J. N. DUPONT, S. W. BANOVIC and A. R. MARDER, Welding Journal 82 (2003) 125-s.
T. W. NELSON, J. C. LIPPOLD and M. J. MILLS, ibid. 79 (2000) 267-s.
M. SIREESHA, V. SHANKAR, K. A. SHAJU and S. SUNDARESAN, Mater. Sci. Eng. A 292 (2000) 74.
M. D. ROWE, T. W. NELSON and J. C. LIPPOLD, Welding Journal 78 (1999) 31-s.
T. W. NELSON, J. C. LIPPOLD and M. J. MILLS, ibid. 78 (1999) 329-s.
A. A. OMAR, ibid. 77 (1998) 86-s.
E. J. BARNHOUSE and J. C. LIPPOLD, ibid. 77 (1998) 477-s.
C. PAN and Z. ZHANG, Mater. Character. 36 (1996) 5.
Z. SUN and T. MOISIO, J. Mater. Sci. Lett. 13 (1994) 802.
Idem., Mater. Sci. Tech. 9 (1993) 603.
H. K. D. H. BHADESHIA, S. A. DAVID and J. M. VITEK, ibid. 7 (1991) 50.
T. A. MAI and A. C. SPOWAGE, Mater. Sci. Eng. A 374 (2004) 224.
T. LUIJENDIJK, J. Mater. Proc. Tech. 103 (2000) 29.
B. MAJUMDAR, R. GALUN, A. WEISHEIT and B. L. MORDIKE, J. Mater. Sci. 32 (1997) 6191.
Z. SUN and R. KARPPI, J. Mater. Proc. Tech. 59 (1996) 257.
Z. SUN and J. C. ION, J. Mater. Sci. 30 (1995) 4205.
P. S. LIU, W. A. BAESLACK and J. HURLEY, Weld. Journal 73 (1994) 175-s.
J. SERETSKY and E. R. RYBA, ibid. 55 (1076) 208-s.
G. PHANIKUMAR and K. CHATTOPADHYAY, Sci. Tech. Weld. Join. 10 (2005) 158.
G. PHANIKUMAR, S. MANJINI, P. DUTTA, J. MAZUMDAR and K. CHATTOPADHYAY, Met. Mater. Trans. 36A (2005) 2137.
G. PHANIKUMAR, P. DUTTA and K. CHATTOPADHYAY, ibid. 35B (2004) 339.
P. S. WEI and F. K. CHUNG, ibid. 31B (2000) 1387.
E. A. BRANDES and G. B. BROOK (eds.), Smithels Reference Book, 7th ed. (Butterworth-Heinemann, Oxford, MA, 1992) p. 1040.
G. F. VANDER VOORT, in “Metallography: Principles and Practice” (Mc-Graw Hill Book Company, 1984).
M. GREMAUD, M. CARRARD and W. KURZ, Acta Mater. 38 (1990) 2587.
W. KURZ and R. TRIVEDI, Met. Mater. Trans. 27A (1996) 625.
P. A. CARVALHO, A. M. DEUS, R. COLACO and R. VILLER, Acta Mater. 46 (1998) 1781.
J. H. FERZIGER and M. PERIC in “Computational Methods for Fluid Dynamics,” 3rd ed. (Springer, 2002) p. 372.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Chatterjee, S., Abinandanan, T.A. & Chattopadhyay, K. Microstructure development during dissimilar welding: Case of laser welding of Ti with Ni involving intermetallic phase formation. J Mater Sci 41, 643–652 (2006). https://doi.org/10.1007/s10853-006-6480-4
Issue Date:
DOI: https://doi.org/10.1007/s10853-006-6480-4