Repairing structural flaws orCrack healing damageNi-based alloy can enhance the durability of materials and extend the service life of mechanical structures and systems. In this study, we demonstrated the feasibility of healing surface cracks in a Ni-basedNi-based alloy GH4169 alloy through the combined application of pulsed electric current and compressive loading. A surface crack was fully healed within approximately 3.5 s under an electric pulse of ~2.5 V, with a pulse width of 25 ms and a frequency of 20 Hz, alongside a compressive force of 500 N. Before complete healing, the crack length decreased nearly linearly with time. A current-affected zone with refined grains was observed, likely resulting from the rapid “solidification” (“recrystallization”) of a locally semi-molten region during fast cooling. The crack healingCrack healing process is thermally activated, with the healing rate governed by the migration of atoms.