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A processing method for improving the strength and plasticity of copper-containing titanium alloy

A technology of a copper-titanium alloy and a processing method, which is applied in the manufacturing field of copper-containing titanium alloy profiles, can solve the problems such as the decrease of alloy plasticity, the inability to obtain high-strength and high-plasticity titanium alloys, etc., and achieve the effect of improving the strength

Active Publication Date: 2021-11-30
NORTHEASTERN UNIV LIAONING
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  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, while obtaining high strength by conventional processing technology, the plasticity of the alloy is significantly reduced, so it is impossible to obtain a titanium alloy with both high strength and high plasticity.

Method used

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  • A processing method for improving the strength and plasticity of copper-containing titanium alloy
  • A processing method for improving the strength and plasticity of copper-containing titanium alloy
  • A processing method for improving the strength and plasticity of copper-containing titanium alloy

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Experimental program
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Embodiment 1

[0034]Copper-containing titanium alloys can be smelted according to the requirements of the composition design, and can be smelted and prepared into ingots by means of consumable electric arc furnace, induction melting or consumable electrodes. In order to achieve uniform alloy composition, multiple smelting can be used to ensure the macroscopic uniformity of alloy composition. Then, the hot-rolled deformation process is used to deform the experimental titanium alloy ingot into a bar or a plate. In this implementation example, the plate deformed to a certain thickness is selected as the original base material.

[0035] Then, the original base material was processed according to the process parameters described in Table 1 to form the experimental material. The tensile mechanical properties are in accordance with the national standard GB / T228.1-2010 metal material tensile test method, and the experiment is carried out on a calibrated tensile machine with a tensile speed of 1mm / ...

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Abstract

The invention provides a processing method for improving the strength and plasticity of the copper-containing titanium alloy. First, the copper-containing titanium alloy is heat-treated at a temperature above the transformation point of copper, and then rapidly cooled to room temperature. Then low-temperature heat treatment is carried out, followed by cold deformation, and finally the copper-containing titanium alloy is subjected to medium-temperature heat treatment. Through the above process, fine-grain strengthening and toughening, dispersion strengthening and precipitation strengthening can be realized at the same time, and the strength of the obtained material is 10-50% higher than the conventional method, and the plasticity is still maintained at not less than 10%. It can be widely used in various copper-containing titanium In the production of alloy profiles. By organically combining the heat treatment and deformation process, the method can not only significantly refine the matrix structure of the titanium alloy to the micron or submicron level, but also significantly refine the precipitated titanium-copper precipitates to the submicron or nanometer level. In addition, the α-Ti phase precipitated during the phase transformation can be refined to achieve high strength and high plasticity.

Description

technical field [0001] The invention belongs to the field of manufacturing copper-containing titanium alloy profiles, and relates to a processing method for significantly improving the strength and plasticity of copper-containing titanium alloys. Background technique [0002] Titanium alloys, including titanium-copper alloys, are widely used in industrial fields, especially chemical, marine and biological materials, due to their excellent corrosion resistance. However, in the process of use, in addition to good corrosion resistance, it is also expected to have the characteristics of high strength and high plasticity. [0003] Copper-containing titanium alloy is a titanium alloy that can be strengthened by dispersion strengthening of copper-containing phase and second phase. In order to improve its strength, solid solution and aging heat treatment methods are often carried out, and a large number of dispersed copper-containing second phases are precipitated in titanium alloy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18C22C14/00
CPCC22C14/00C22F1/183
Inventor 张二林王晓燕秦高梧
Owner NORTHEASTERN UNIV LIAONING
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