Research on GH4169/K418B composite and functionally gradient materials

Based on the laser coaxial powder feeding LENS method, the composite materials and functional gradient materials of GH4169/K418B were prepared. The elastic modulus of GH4169/K418B was increased by 64.1% when the ratio of GH4169/K418B was 80%/20% compared with the pure GH4169. The yield strength was increased by 22.8%, the tensile strength was increased by 23.5%. When the proportion of K418B exceeded the threshold, the mechanical properties of functional gradient materials was significantly reduced. Due to the gradient characteristics of its composition, the performance of GH4169/K418B functionally mradient aterials showed the “learning from each other”. Its elastic modulus of 80.1 GPa, yield strength of 567.67 MPa, tensile strength of 790 MPa, the performance is at the excellent level of each composite material, can be applied to the aerospace field has certain requirements for various performance of the complex scene.