| 摘要 |
A multi-component braze filler alloy comprising 60-70 wt% of CM247 superalloy and a BRB braze alloy is diffused-brazed to a CM247 alloy base substrate such as a gas turbine blade or vane. The substrate/braze interface may subsequently be weld-repaired without de-melting, migrating the braze alloy from the interface. The weld zone and a surrounding area are resistant to solidification cracks. After the alloy composition is brazed to the base substrate, the component may be returned to service. Thereafter the component remains repairable by welding or re-brazing if needed to correct future in-service defects. |
