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Method for researching high-temperature deformation behavior of tungsten-rhenium-hafnium carbide alloy

A high-temperature deformation, hafnium carbide technology, applied in neural learning methods, design optimization/simulation, biological neural network models, etc., can solve problems such as reports of model research that have not yet been found, and achieve good prediction accuracy, reduced friction, and high temperature resistance. good performance

Inactive Publication Date: 2021-07-02
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no report on the high-temperature deformation mechanism and constitutive equation model of HfC-doped tungsten-rhenium alloy has been found

Method used

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  • Method for researching high-temperature deformation behavior of tungsten-rhenium-hafnium carbide alloy
  • Method for researching high-temperature deformation behavior of tungsten-rhenium-hafnium carbide alloy
  • Method for researching high-temperature deformation behavior of tungsten-rhenium-hafnium carbide alloy

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Embodiment 1

[0071] The research method of the high-temperature deformation behavior of the tungsten-rhenium hafnium carbide alloy in this embodiment includes the following steps:

[0072] Step 1. According to the component content of each element in the tungsten-rhenium-hafnium carbide composite material, respectively weigh W powder, Re powder and HfC powder, and carry out mechanical alloying treatment by high-energy ball milling under the protection of inert gas to obtain mixed alloy powder; The mass purity of the W powder is 99.9%, the average particle diameter is 5 μm, the mass purity of the Re powder is 99.95%, the average particle diameter is 2 μm, the mass purity of the HfC powder is 99.9%, and the average particle diameter is 1 μm;

[0073] The high-energy ball mill is carried out using a QM-3SP2 planetary high-energy ball mill, the ball mill jar used is an agate jar, the balls are agate balls, the speed of the high-energy ball mill is 400rpm, the time is 40h, and the ball-to-materi...

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Abstract

The invention discloses a method for researching a high-temperature deformation behavior of a tungsten-rhenium-hafnium carbide alloy. The method comprises the following steps of 1, weighing W powder, Re powder and HfC powder, performing high-energy ball milling, and then performing hot pressed sintering to obtain the tungsten-rhenium-hafnium carbide alloy; 2, obtaining stress and strain data under different conditions through a thermal compression test, and then constructing a constitutive relation model and training an artificial neural network model; 3, determining the prediction accuracy of the two models, and selecting the model with higher accuracy to predict the high-temperature deformation behavior of the tungsten-rhenium-hafnium carbide alloy; and 4, researching the structure and texture evolution of a sample in the thermal compression test, and obtaining the high-temperature deformation behavior of the tungsten-rhenium-hafnium carbide alloy in combination with a prediction result. According to the method, a stress-strain curve obtained through the thermal compression test of the tungsten-rhenium-hafnium carbide alloy is combined with a constitutive equation, the artificial neural network and a microstructure, the relation between the deformation behavior of the tungsten-rhenium-hafnium carbide alloy and dynamic recovery and dynamic recrystallization of the microstructure is disclosed, and the predictability on the deformation behavior of the tungsten-rhenium-hafnium carbide alloy is good.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a research method for high-temperature deformation behavior of a tungsten-rhenium-hafnium carbide alloy. Background technique [0002] Tungsten (W) has unique mechanical properties including high melting point (3410°C), high modulus, excellent heat resistance and ablative properties, making it an ideal material for high temperature applications including turbines, fusion reactors and kinetic energy penetration device. However, the strength of pure tungsten is greatly reduced at high temperatures. Alloying is an effective way to improve the strength of materials, and the addition of rhenium (Re) has been proven to improve the room temperature ductility and high temperature strength of tungsten (W). However, due to the small reserves and high price, rhenium cannot be added in large quantities to enhance the strength of the metal. The combination of refractory...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C27/04C22C32/00C22F1/18G06F30/27G06N3/04G06N3/08G06F111/10G06F113/26G06F119/08G06F119/14
CPCC22C1/05C22C27/04C22C32/0052C22F1/18G06F30/27G06N3/084G06F2111/10G06F2113/26G06F2119/08G06F2119/14G06N3/044
Inventor 李延超张文林小辉梁静薛建嵘张新
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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