Abstract
Influence of joining time on microstructural and mechanical characteristics of IN-738LC joined to GTD-111 using TLP process and with MBF-20 filler was studied. Joining process was performed at 1100°C in a vacuum condition and for various durations of 5, 30 and 60 minutes. Microstructural observations were performed using optical microscopy, SEM and EDS.
It was shown when required time for isothermal solidification is not met; deleterious inter-metallic and eutectic compounds would form on the joining center-line. Moreover, the nature of eutectic structures formed during isothermal solidification process could be changed by varying bonding time. It was also found that the mechanical properties of the bond is highly dependent on the amount of inter-metallic and eutectic compounds formed in the joint area, so that when no inter-metallic compounds are formed, the highest strength values could be reached.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Reference
Pouranvari, M., Ekrami, A., Kokabi, A.H., “Microstructure development during transient liquid phase bonding of GTD-111 nickel-based superalloy”, Journal of Alloys and Compounds 461(2008), 641– 647.
Idowu, O.A., Ojo, O.A., and Chaturvedl, M.C., “Microstructural Study of Transient Liquid Phase Bonded Cast Inconel 738LC Superalloy”, Metallurgical and material transactions, Vol. 37 A (2006), 2787–2796.
Wikstrom, N.P., Ojo, O.A., Chaturvedi, M.C., “ Influence of process parameters on microstructure of transient liquid phase bonded Inconel 738LC superalloy with Amdry DF-3 interlayer”, Materials Science and Engineering A 417 (2006), 299–306.
Tung, S. K., Lim, Lai, Wu, H., “Evolution of nickel borides in Ni-Si-B brazed joints of nickel during post-braze heat treatment”, materials science and technology, Vol.13 (1997), 1051–1056.
WU, Xiaowei, Chandel, R. S., Li Hang, “Evaluation of transient liquid phase bonding between nickel-based superalloys”, Journal of materials science 36 (2001), 1539–1546.
Gale, W. F. and Butts, D. A., “Transient liquid phase bonding”, Science and Technology of Welding and Joining, Vol. 9, No. 4 (2004), 283–300.
Liu, J. D., Jin, T., Zhao, N. R., Wang, Z. H., Sun, X. F., Guan, H. R., Hu, Z. Q., “ Effect of transient liquid phase (TLP) bonding on the ductility of a Ni-base single crystal superalloy in a stress rupture test”, materials characterization 59 (2008), 68–73.
Duvall, D. S., Owczarski, W. A., “Effect of bonding temperature on microstructure development during TLP bonding of a nickel base superalloy”, weld. J., Vol. 53 (1974), 203–214.
Paulonis, D.F., Duvall, D.S., and Owczarski, W.A., “Diffusion bonding utilizing transient liquid phase”, U.S. Patent 3,678,570 (1972), 1–6.
Pouranvari, M., Ekrami, A., Kokabi, A.H., “Effect of bonding temperature on isothermal solidification rate during transient liquid phase bonding of Inconel 738LC superalloy”, Journal of Alloys and Compounds 469 (2009), 270–275.
Ojo, O.A., Richards, N.L., Charturvedi, M.C., “Effect of bonding temperature on isothermal solidification rate during transient liquid phase bonding of Inconel 738LC superalloy”, Sci. Technol.Weld. Joining 9 (2004), 209–220.
Mosallaee, M., Ekrami, A., Ohsasa, K., Matsuura, K., “Microstructural evolution in the transient liquid phase bonding area of IN-738LC/BNi-3/IN-738LC”, Metallurgical and material transactions A, Vol. 39A (2008), 2389–2402.
Idowu, O.A., Richards, N.L., Chaturvedi, M.C., “Effect of bonding temperature on isothermal solidification rate during transient liquid phase bonding of Inconel 738LC superalloy”, Materials Science and Engineering A 397 (2005), 98–112.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 TMS (The Minerals, Metals & Materials Society)
About this paper
Cite this paper
Ghadi, M.A., Amjadi, M.A., Shahriari, M.S., Ghomi, M.K. (2015). Influence of Joining Time on Microstructure and Mechanical Properties of TLP-Joined IN-738LC to GTD-111. In: Karaman, I., Arróyave, R., Masad, E. (eds) Proceedings of the TMS Middle East — Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015). Springer, Cham. https://doi.org/10.1007/978-3-319-48766-3_10
Download citation
DOI: https://doi.org/10.1007/978-3-319-48766-3_10
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48599-7
Online ISBN: 978-3-319-48766-3
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)