Solid-State Joining of Dissimilar Ni-Based Superalloys via Field-Assisted Sintering Technology for Turbine Applications

Friction welding or electron/laser beam welding of nickel superalloys compromises the microstructure with localized melting and heat-affected zones (HAZ). In this work, Field-Assisted Sintering Technology (FAST) is studied as an alternative method for solid-state diffusion bonding of superalloys CM247LC and Inconel 718. Bonding microstructures and room-temperature tensile strengths are evaluated. Preliminary results suggest that FAST bonding leads to an interface with a compositional gradient without producing a HAZ and without losing tensile strength.

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Work Title Solid-State Joining of Dissimilar Ni-Based Superalloys via Field-Assisted Sintering Technology for Turbine Applications
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Open Access
Creators
  1. Charis I. Lin
  2. Namiko Yamamoto
  3. Derek S. King
  4. Jogender Singh
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Publication Date June 1, 2021
Publisher Identifier (DOI)
  1. https://doi.org/10.1007/s11661-021-06274-w
Deposited July 28, 2021

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  • Created
  • Added Lin2021_Article_Solid-StateJoiningOfDissimilar.pdf
  • Added Creator Charis I. Lin
  • Added Creator Namiko Yamamoto
  • Added Creator Derek S. King
  • Added Creator Jogender Singh
  • Published
  • Updated
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