High-throughput preparation method of high-temperature titanium alloy material based on laser in-situ metallurgy

Abstract

The invention provides a high-throughput preparation method of a high-temperature titanium alloy material based on laser in-situ metallurgy. The method comprises the following steps: 1) taking a titanium alloy as a basic component, doping rare earth and/or a high-melting-point element, and designing a novel high-temperature titanium alloy with various component proportions at one time; (2) symmetrically arranging a plurality of lateral powder feeding heads and a plurality of independent powder flow monitoring modules in one-to-one correspondence with the lateral powder feeding heads on the periphery of an output mirror of a coaxial wire feeding laser machining head for wire feeding and powder feeding; (3) carrying out wire feeding and powder feeding according to the configured wire feeding speed and powder feeding speed, simultaneously starting a laser device, enabling high-energy ring laser beams to fuse the wires and the powder in situ according to at least one set of preset technological parameters, and carrying out high-throughput forming to obtain massive cast ingots of the novel high-temperature titanium alloy with the different component proportions; and (4) carrying out high-temperature compression test on the cast ingots of the high-temperature titanium alloy to determine the compressive strength, and optimally designing the components of the high-temperature titanium alloy according to the compressive strength.

Description

technical field [0001] The invention relates to laser additive manufacturing products and methods, in particular to a high-throughput preparation method of high-temperature titanium alloy materials based on laser in-situ metallurgy. Background technique [0002] High-temperature titanium alloy has excellent high-temperature mechanical properties and high-temperature oxidation resistance, especially in the harsh working conditions of high temperature, high speed, and high pressure when the aeroengine is running, it can take into account high temperature performance and high thrust-to-weight ratio, and is an indispensable part of the aerospace field. a structural material. The United States, Russia, and the United Kingdom have all established their own high-temperature titanium alloy systems. my country has also independently developed Ti60, Ti600 and other alloys from the initial imitation, and its long-term service temperature can reach 600°C. 600°C is also considered to be...

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Problems solved by technology

The traditional smelting, casting and forging processes have great difficulties in controlling the uniform composition and impurity content, and can only p

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