Influence of Solid-State Diffusion during Equilibration on Microstructure and Fatigue Life of Superalloy Wide-Gap Brazements
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Date
2013
Authors
Osoba, L.O.
Ojo, O.A.
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Metallurgical and Materials Transactions A
Abstract
The influence of solid-state diffusion-controlled soluteloss into additive powder particles (APPs), as determined by particles size, during the equilibration stage of
wide-gap brazing, on microstructure and fatigue
behavior of a brazed aerospace superalloy was studied.
The results, which experimentally confirm previously
reported numerical model simulation results, show that,
in order to avoid degradation of fatigue life of wide-gap
brazement, adequate solute-loss into the APPs, which is
necessary to prevent their complete melting, but has not
been generally considered, is imperative.
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(2013). Metall and Mat Trans A; 44(9):4020-4024