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Journal of Materials Science

, Volume 42, Issue 22, pp 9187–9193 | Cite as

Effect of bonding variables on TLP bonding of oxide dispersion strengthened superalloy

  • Ratan Kumar SahaEmail author
  • Tahir I. Khan
Article

Abstract

Transient liquid phase (TLP) bonding has evolved as a successful alternative joining technique for high service temperature components (e.g., vanes and blades for aircraft gas turbine engines) made from superalloys when neither fusion welding nor solid-state bonding techniques are successful. However, study shows that the optimization of bonding variables is critical to achieve a metallurgically sound joint free from deleterious intermetallic constituents in the joint region. In this study, the influence of bonding pressure and interlayer thickness on microstructural developments at the joint region of TLP bonded oxide dispersion strengthened (ODS) superalloy MA758 was examined. A commercial interlayer based on the Ni–Cr–B (MBF-80) system was used and results showed that bonding pressure and interlayer thickness affected the final width of the joints. A theoretical study revealed that the TLP bonding time can also be reduced when there is an increase in bonding pressure.

Keywords

Bonding Temperature Oxide Dispersion Strengthened Joint Region Transient Liquid Phase Isothermal Solidification 

Notes

Acknowledgments

The authors wish to thank Natural Sciences and Engineering Research of Canada for financial support for this research.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Department of Mechanical and Manufacturing EngineeringUniversity of CalgaryCalgaryCanada

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