Integrated manufacturing method for high-temperature-resistant thin-walled special-shaped components by laying laminated metal foil strips

Abstract

An integrated manufacturing method for high-temperature-resistant thin-walled special-shaped components by laying laminated metal foil strips, adding plastic phases in the form of foil strips, stacking and rolling lamination with two matrix element foil strips, and simultaneously Granular reinforcing phase can be added between the foil strips during rolling. Both methods can make the thin-walled special-shaped member obtain a reinforced structure at any position in the axial direction, and avoid the change of the thin-walled special-shaped member due to the geometric shape and external dimension of the cross-section. The defects that cause stress concentration and cracks can also be strengthened at different radial thicknesses of thin-walled special-shaped members to obtain a laminate-like structure. In the present invention, the pre-sintering process and internal pressure forming of the component are completed by using the granular medium such as sand to transmit pressure, and the component is completed under the joint action of pressure and temperature to complete the low-temperature reaction synthesis, which is beneficial to the efficient progress of the subsequent high-temperature reaction synthesis, and at the same time solves the problem of The problem of air leakage due to the gap between adjacent foil strips when the preform is inflated by hot air.

Description

technical field [0001] The invention belongs to the technical field of manufacturing of high temperature resistant thin-walled special-shaped components, and in particular relates to an integrated manufacturing method of thin-walled special-shaped components by laying laminated metal foil tapes to make blanks. Background technique [0002] The new generation of aerospace vehicles is developing rapidly in the direction of high Mach number, high load, ultra-long flight time and ultra-long range, and the demand for lightweight, high temperature and thin-walled components is increasing. The aerodynamic heat generated by the ultra-high cruising speed of the hypersonic vehicle will cause the scramjet intake and other components to generate extremely high temperatures. The service temperature of the intake port is as high as 900~1000°C, which has exceeded the limit temperature of commonly used titanium alloys. However, the commonly used nickel-based superalloys will cause serious o...

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Problems solved by technology

[0005] In order to solve the limitation of the laying path when the single-layer foil is laid and made, the foil is partially stacked or gapped, resulting in incomplete diffusion reaction and the transition state compound. The phase composition and content of the microstructure of TiAl and NiAl intermetallic compounds It is difficult to control, and it is difficult to obtain thin-walled special-shaped components with reinforced structures at different positions when laying single-layer foils, and the problem of air leakage due to the gap between adjacent foils when the preform is inflated. An integrated manufacturing method for high-temperature-resistant thin-walled special-shaped components using laminated metal foil strips to lay blanks

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