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High-strength and high-elasticity titanium-copper alloy and preparation method thereof

A high-elasticity, titanium-copper technology, which is applied in the field of high-strength and high-elasticity titanium-copper alloys and their preparation, can solve the problems that the tensile strength, hardness and elongation of titanium bronze cannot be satisfied.

Pending Publication Date: 2022-06-24
浙江惟精新材料股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of industry, the performance requirements of copper alloys in the fields of electronics, precision instruments and high-speed iron devices are getting higher and higher. The tensile strength, hardness and elongation of titanium bronze have been difficult to meet the needs of the industry.

Method used

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  • High-strength and high-elasticity titanium-copper alloy and preparation method thereof
  • High-strength and high-elasticity titanium-copper alloy and preparation method thereof
  • High-strength and high-elasticity titanium-copper alloy and preparation method thereof

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preparation example Construction

[0028] The present invention provides a method for preparing the high-strength and high-elasticity titanium-copper alloy according to the above technical solution, which comprises the following steps:

[0029] (1) casting after the alloy raw material is smelted to obtain an alloy ingot;

[0030] (2) forging, hot rolling and cold rolling are carried out successively to the alloy ingot obtained in the step (1) to obtain a rolled alloy;

[0031] (3) The rolled alloy obtained in the step (2) is sequentially subjected to bell annealing, finishing rolling, continuous annealing, pre-finishing, solution treatment, finishing rolling, aging treatment and stretch-bending straightening to obtain high strength High elastic titanium copper alloy.

[0032] In the present invention, the alloy raw material is smelted and then casted to obtain an alloy ingot.

[0033] In the present invention, the alloy raw material preferably includes microalloy raw material, electrolytic copper, copper-tita...

Embodiment 1

[0075] A high-strength and high-elasticity titanium-copper alloy, in terms of mass percentage, is composed of: Ti: 3.2%, Fe: 0.2%, Sn: 0.1%, and the balance of Cu;

[0076] The preparation method of the high-strength and high-elasticity titanium-copper alloy comprises the following steps:

[0077](1) after the alloy raw material is smelted, carry out side drainage casting to obtain an alloy ingot, and the alloy raw material is electrolytic copper, Cu-50%Ti master alloy, industrial pure iron and pure Sn; the temperature of the smelting is 1300 ℃ ℃; the vacuum degree of the smelting is 5×10 -2 Pa;

[0078] (2) Forging the alloy ingot obtained in the step (1) at 850°C (the forging method is to forge two times on one side, then turn 180° and continue forging for two times), and then heat the ingot at 800°C for 2 hours. Rolling (the initial rolling temperature of hot rolling is 800 °C, the final rolling temperature of hot rolling is 530 °C, and the total processing rate of hot ro...

Embodiment 2

[0087] A high-strength and high-elasticity titanium-copper alloy, in terms of mass percentage, is composed of: Ti: 2.5%, Fe: 0.25%, In: 0.15%, and the balance of Cu;

[0088] The preparation method of the high-strength and high-elasticity titanium-copper alloy comprises the following steps:

[0089] (1) after the alloy raw material is smelted, carry out side drainage casting to obtain an alloy ingot, and the alloy raw material is electrolytic copper, Cu-50%Ti master alloy, industrial pure iron and pure In; the temperature of the smelting is 1300 ℃ ℃; the vacuum degree of the smelting is 5×10 -2 Pa;

[0090] (2) Forging the alloy ingot obtained in the step (1) at 900°C (the forging method is to forge two times on one side, then turn 180° and continue forging for two times), and then heat the ingot at 750°C for 4 hours. Rolling (the initial rolling temperature of hot rolling is 750 °C, the final rolling temperature of hot rolling is 520 °C, and the total processing rate of hot...

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Abstract

The invention provides a high-strength and high-elasticity titanium-copper alloy and a preparation method thereof, and belongs to the field of non-ferrous metal processing. The high-strength and high-elasticity titanium-copper alloy provided by the invention comprises the following components in percentage by mass: 2.5 to 3.5 percent of Ti, 0.15 to 0.25 percent of Fe, 0 to 0.2 percent of rare earth element, 0.1 to 0.5 percent of microalloy element and the balance of Cu, the microalloy elements comprise one or more of Sn, In and P. The result of the embodiment shows that the volume fraction of discontinuous precipitated structures in the high-strength and high-elasticity titanium-copper alloy is smaller than 10%, nano precipitated phases distributed in a dispersed mode are contained in crystal grains, the size is smaller than 20 nm, the tensile strength is larger than or equal to 900 MPa, the hardness is larger than or equal to 285HV, the percentage elongation after fracture A11.3 is larger than or equal to 6%, and the tensile strength is larger than or equal to 900MPa. And meanwhile, the cable has good softening resistance, electromagnetic shielding performance and stress relaxation resistance.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metals, in particular to a high-strength and high-elasticity titanium-copper alloy and a preparation method thereof. Background technique [0002] Due to its excellent elasticity and electrical conductivity, beryllium copper is widely used in various electronic contact spring sheets and elastic components. However, during the production and use of copper beryllium, beryllium oxide, which is harmful to the human body and the environment, will be released. Long-term exposure has the risk of cancer and is not conducive to ecological protection. As a typical age-strengthened high-strength and high-elasticity alloy, titanium bronze is considered to be the most promising alloy to replace traditional beryllium copper in the context of environmentally friendly research requirements. However, with the development of industry, the performance requirements of copper alloys in the fields of electronic an...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22F1/08C22C1/03
CPCC22C9/00C22F1/08C22C1/03
Inventor 刘志成韩淑敏陈希春张勇李钊吴存慧娄行陆添璐
Owner 浙江惟精新材料股份有限公司
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