Aging response of transient liquid phase bonded wrought IN718 superalloy: influence of post-bond heat treatment |
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| Authors: | M. Pouranvari A. Ekrami A. H. Kokabi |
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| Affiliation: | Department of Materials Science and Engineering, Sharif University of Technology, Tehran 11365-11155, Iran |
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| Abstract: | 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. |
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| Keywords: | Transient liquid phase bonding Aging response Isothermal solidification Post-bond heat treatment |
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