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

作者：Pouranvari M^*; Ekrami A; Kokabi A H

来源：Science and Technology of Welding and Joining, 2014, 19(2): 105-110.

DOI：10.1179/1362171813Y.0000000170

• Transient liquid phase bonding
• Aging response
• Isothermal solidification
• Post-bond heat treatment

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.

• 出版日期2014-2