Pulse current-assisted high-temperature stretching device and method for high-temperature alloy material

Abstract

The invention discloses a pulse current-assisted high-temperature stretching device and method for a high-temperature alloy material. The pulse current-assisted high-temperature stretching device comprises an electronic universal testing machine, a pulse power supply and a hanging type stretching clamp, wherein the electronic universal testing machine comprises an upper cross beam and a lower cross beam, the upper cross beam and the lower cross beam are arranged in parallel, the two ends of the hanging type stretching clamp are detachably connected with the upper cross beam and the lower cross beam respectively, the pulse power source is electrically connected with the hanging type stretching clamp, the hanging type stretching clamp is sleeved with a heating furnace, a cooling water circulation device is arranged on the hanging type stretching clamp. and the cooling water circulation device is positioned above the heating furnace. According to the invention, the device is easy and convenient to disassemble and assemble, high in safety, good in insulativity, comprehensive in function and capable of being continuously used.

Description

technical field [0001] The invention relates to the technical field of pulse current assisted thermoforming, in particular to a device and method for pulse current assisted high temperature stretching of high temperature alloy materials. Background technique [0002] With the rapid development of aerospace technology, its requirements for equipment performance are also getting higher and higher. Superalloy materials are widely used in the aerospace field due to their high specific strength, excellent oxidation resistance and impact resistance. However, such materials have high strength and poor plastic forming ability. The traditional thermoforming process is difficult to meet the technical requirements of the new generation of equipment. . In 1963, when Troitskii and Likhtman studied the uniaxial stretching of zinc single crystals, they found that electron beam irradiation along the direction of the slip system could reduce the flow stress of the material and increase the ...

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Problems solved by technology

The device of this utility model is too cumbersome and inconvenient to install; secondly, the installation and replacement process of the tensile sample is not simple enough. When it is necessary to use a high-temperature furnace to assist the tensile test, it is necessary to wait until the fixture is cooled to a certain temperature before removing and replacing the sample. It will take a lot of time to conduct a large-scale tensile test or a high-temperature tensile test, and frequent heating and cooling will affect the service life of the device to a certain extent; When testing at high temperature, there is no cooling or heat insulation device, and there is a risk of damage to the testing machine

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