Effects of heat treatment on microstructures and mechanical properties of GH4169/K418 functionally graded material fabricated by laser melting deposition

Blade-Integrated Disk is a perspective one-piece design strategy of turbine engine components with high efficiency of air compression. In this work, a functionally graded material composed of GH4169 and K418 is processed by laser melting deposition technique, followed by suitable heat treatment to optimize the microstructures and mechanical properties. Microstructure characterization, tensile and small punch creep tests of the functionally...