Figure 4. (a) SEM micrographs showing liquated boride along a grain boundary (GB) (b) a micrograph showing liquation products on the same GB from both boride and γ' precipitates (c) SEM EDX from the liquated boride

From

On the Role of Boride in the Structural Integrity of a Turbine Disc Superalloy’s Solid State Weld

K.M. Oluwasegun, J.O Olawale, M.D. Shittu, O.O. Ige, P.O. Atanda, O.O. Ajide, L.O. Osoba

American Journal of Materials Engineering and Technology. 2017, 5(1), 14-23 doi:10.12691/materials-5-1-3