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Femtosecond laser high-quality drilling of film cooling holes in nickel-based single superalloy for turbine blades with a two-step helical drilling method

Materials ScienceAdvanced Laser ProcessingEngineeringNickel-based Single SuperalloySuperalloyWelding ProcessMechanical EngineeringLaser Processing TechnologyTurbine BladesMetal ProcessingMicrostructureHigh-quality Drilling