Effect of Time and Temperature on the Microstructural Evolution of Wide-Gap Brazed MAR-M247 Nickel Superalloy Using BNi-9 Braze Alloy

Wide-gap brazing has been widely utilized as one of the go-to alternatives to welding in the repair of turbine components in the aerospace and power generation industries. In this study, differential scanning calorimetry, electron microscopy, and thermodynamic calculations were used to determine the influence of brazing time and temperature on the microstructural evolution for a layered wide-gap brazing process using a MAR-M247/BNi-9 system. …