An ultra-high temperature long-term mechanical property testing system equipped with heat-insulated air-cooled fixtures

Abstract

The invention is an ultra-high temperature long-term mechanical property testing system equipped with heat-insulated air-cooled fixtures, including ultra-high-temperature heating furnaces, heat-insulated air-cooled fixtures, transition fixtures and other components. The ultra-high temperature heating furnace is used to achieve the predetermined test temperature and its accuracy. The heat-insulated air-cooled fixture has both the heat insulation of the ceramic material and the cooling function of the airflow inside the cavity. The transition fixture mainly bears the mechanical load. The advantage of the present invention is that the structure of the ultra-high temperature long-term mechanical testing system is simple, and the temperature is always kept at a low level by rationally designing the thickness of the heat-insulating air-cooled fixture cavity and adjusting the pressure and flow rate of the cooling gas inside the cavity. Level, so that the long-term mechanical performance test of ultra-high temperature structural materials in ultra-high temperature environment can be realized by selecting ordinary superalloys.

Description

technical field [0001] The present invention proposes an ultra-high temperature long-term mechanical property test system equipped with heat-insulated and air-cooled fixtures, which is used for comprehensive mechanical property tests such as axial fatigue and durability / creep of ultra-high temperature structural materials, and belongs to the mechanical property test technology of high temperature structural materials field. Background technique [0002] With the rapid progress and vigorous development of advanced aviation and aerospace engine technology, higher and higher requirements are put forward for the comprehensive performance of high-temperature structural materials, especially the demand for improving the temperature-bearing capacity of high-temperature structural materials is becoming more and more urgent. The operating temperature of traditional nickel-based and cobalt-based superalloys is within 1100°C (including the use of cooling technology), which is close to ...

AI Technical Summary

Problems solved by technology

If the design and preparation technology of high-temperature fixtures are not overcome, the long-term mechanical performance test of ultra-high-temperature structural materials is almost empty talk, and it will not be able to meet the urgent needs of ultra-high-temperature structural materials in the fields of aviation and aerospace at present and in the future.

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