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Aging response of transient liquid phase bonded wrought IN718 superalloy: Influence of post-bond heat treatment

Pouranvari, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1179/1362171813Y.0000000170
  3. Abstract:
  4. Aging response of transient liquid phase Nb bearing wrought IN718 nickel base superalloy is studied. The aging behaviour of the joint is influenced by low Nb+Al+Ti content of isothermal solidification zone (ISZ) and formation of Nb-Cr-Mo based boride precipitates in diffusion affected zone (DAZ). It was shown that applying a post-bond heat treatment which was able to eliminate the diffusion induced boride precipitates in DAZ and increase the Nb+Al+Ti content of the ISZ improved the aging response and shear strength of the joint
  5. Keywords:
  6. Post-bond heat treatment ; Aging response ; Diffusion-affected zone ; IN718 superalloy ; Isothermal solidification ; Nickel base superalloy ; Ti content ; Transient liquid phase ; Transient liquid phase bonding ; Borides ; Isotherms ; Liquids ; Solidification ; Superalloys ; Heat treatment
  7. Source: Science and Technology of Welding and Joining ; Vol. 19, issue. 2 , February , 2014 , pp. 105-110 ; ISSN: 13621718
  8. URL: http://www.maneyonline.com/doi/abs/10.1179/1362171813Y.0000000170