Powder Interlayer Bonding of Nickel-Based Superalloys with Dissimilar Chemistries
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Institute of Structural Materials, Bay Campus, Swansea University, Swansea SA1 8EN, UK
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Advanced Imaging of Materials Facility, Bay Campus, College of Engineering, Swansea University, Swansea SA1 8EN, UK
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Rolls-Royce plc, P.O. Box 31, Derby DE24 8BJ, UK
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Author to whom correspondence should be addressed.
Academic Editor: Damjan Klobcar
Materials 2021, 14(8), 2029; https://doi.org/10.3390/ma14082029
Received: 16 March 2021
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Revised: 8 April 2021
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Accepted: 15 April 2021
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Published: 17 April 2021
(This article belongs to the Special Issue Welding and Joining of Materials for Advanced Aerospace Applications)
Novel joining methods are crucial for the aerospace industry to repair components damaged in the high stress, high cycle environment of the jet turbine engine. Powder interlayer bonding (PIB) is a novel joining technique that is being explored for use in the aerospace industry. PIB involves the use of a powder interlayer between two faying surfaces alongside a localised temperature gradient and compressive force to produce one joined workpiece. The use of a localised temperature gradient not only reduces the heat affected zone (HAZ) but also reduces the energy requirements for the process as only a small area of the component needs to be elevated in temperature. Nickel-based superalloys are commonly used in the gas turbine engine due to their superior mechanical properties that are maintained even under the most elevated temperatures experienced in the jet turbine engine. It is therefore essential these alloys can be easily repaired. Conventional joining methods such as friction welding have proved difficult for new generation nickel-based superalloys; therefore, there is much interest in PIB as an alternative repair technology. This study shows the potential of PIB to join dissimilar nickel-based superalloys: bonds with very little porosity were observed after only a short processing time.
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Keywords:
powder; interlayer; bonding; joining; nickel-based superalloys
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MDPI and ACS Style
Stanners, O.; Russell, J.; John, S.; Davies, H.M.; Marchisio, S. Powder Interlayer Bonding of Nickel-Based Superalloys with Dissimilar Chemistries. Materials 2021, 14, 2029. https://doi.org/10.3390/ma14082029
AMA Style
Stanners O, Russell J, John S, Davies HM, Marchisio S. Powder Interlayer Bonding of Nickel-Based Superalloys with Dissimilar Chemistries. Materials. 2021; 14(8):2029. https://doi.org/10.3390/ma14082029
Chicago/Turabian StyleStanners, Olivia, James Russell, Sean John, Helen M. Davies, and Silvia Marchisio. 2021. "Powder Interlayer Bonding of Nickel-Based Superalloys with Dissimilar Chemistries" Materials 14, no. 8: 2029. https://doi.org/10.3390/ma14082029
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