Method for evaluating high-temperature gas scouring resistance of titanium-aluminum-based alloy

Abstract

The invention discloses a method for evaluating the high-temperature gas scouring resistance of a titanium-aluminum-based alloy, which comprises the following steps: preparing a plurality of samples, carrying out surface observation and weighing on each sample, and selecting the initial mechanical properties of part of the samples as the mechanical property data of a standard sample; mounting a to-be-tested sample on a scouring test device, and adjusting the distance between the high-temperature fuel gas generation device and the to-be-tested sample; starting the high-temperature fuel gas generating device, debugging the high-temperature fuel gas state, and washing the sample after the high-temperature fuel gas reaches an expected state; after the sample is scoured for preset time, taking out the sample, observing the surface of the sample, weighing, and then testing the mechanical property of the scoured sample; repeating the steps until the sample is damaged; and evaluating the high-temperature gas scouring resistance of the titanium-aluminum-based alloy according to the test condition. By adopting the method disclosed by the invention, not only can the high-temperature fuel gas scouring resistance of the titanium-aluminum-based alloy be quickly and efficiently evaluated, but also the safety in the test process is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of titanium-aluminum-based alloy testing, and in particular relates to a method for evaluating the high-temperature gas erosion resistance performance of titanium-aluminum-based alloys. Background technique [0002] Titanium-aluminum-based alloys have a high melting point, low density, high specific strength, specific stiffness and excellent high-temperature comprehensive mechanical properties, and are expected to partially replace nickel-based superalloys in aircraft engines. They are mainly used in compressor blades, turbine blades, etc. part. Turbine blades are subject to harsh environments such as high-temperature gas erosion and dynamic loads, and the performance of high-temperature gas resistance is one of the key performances that determine their application. Therefore, evaluating the high-temperature gas erosion resistance of titanium-aluminum-based alloys is of great significance for promoting the ...

AI Technical Summary

Problems solved by technology

When multiple tests are used for comprehensive evaluation, there are many types of tests and a large amount of tests, and different tests simulate different service conditions, and a single test cannot clarify the coupling relationship of multiple service conditions; the simulation of near-working conditions is closer to the real state of service , the results are relatively accurate, but the ground simulation test equipment is complicated, the test cost is high, and it is not suitable for the material selection needs in the design stage

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