Preparation method of high-temperature alloy four-layer lattice lightweight structure

Abstract

The invention provides a preparation method of a high-temperature alloy four-layer lattice lightweight structure. The preparation method comprises the steps of 1, machining hollowed-out rhombus grid structures of middle layer plates; 2, machining a skin panel; 3, removing surface oxidation films of the skin panel and the two middle layer plates through acid pickling, and cleaning acid, alkali andgreasy dirt remaining on the surface of the skin panel and the surfaces of the two middle layer plates through ethyl alcohol; 4, coating the plate surfaces of the two middle-layer plates with solder resist; 5, carrying out diffusion bonding of the skin panel and the middle layer plates; 6, performing superplastic forming; and 7, taking a formed prefabricated blank out of a superplastic forming mold, and machining the GH4169 high-temperature alloy four-layer lattice lightweight structure through a machining method. The four-layer ultrathin lattice structure rudder airfoil prepared through the method is made of GH4169 high-temperature alloy and has the advantages of good machinability and weldability, the ultrathin lattice structure has the advantage of light weight, and the four-layer rudder airfoil is high in degree of symmetry and better in mechanical property.

Description

technical field [0001] The invention belongs to the field of GH4169 superalloy structure forming, and in particular relates to a method for preparing a superalloy four-layer lattice lightweight structure. Background technique [0002] The GH4169 superalloy is a nickel-based superalloy that is precipitated and strengthened by body-centered four-room γ” and face-centered cubic γ’ phases. It has good comprehensive properties in the temperature range of -253-700 ° C, and the area service strength below 650 ° C It ranks first among deformed superalloys, and has good fatigue resistance, radiation resistance, oxidation resistance, corrosion resistance, good processing performance, welding performance and long-term organizational stability, and can manufacture various parts with complex shapes. In the , nuclear energy and petroleum industries, it has been widely used in the above temperature range. [0003] As an important lightweight structure, the lattice structure is widely used...

AI Technical Summary

Problems solved by technology

The introduction of the lattice structure will bring about a more significant weight reduction effect, but the current research on the lattice structure is limited to medium and thick plate materials due to the influence of material properties, and it is difficult to fully utilize the high-strength and light-weight characteristics of the lattice structure

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