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High-strength titanium-copper alloy rod suitable for conductive elastic components and preparation method

A titanium-copper alloy and component technology, applied in the field of high-strength titanium-copper alloy bars and their preparation, can solve problems such as toxicity and safety issues that cannot be ignored, and achieve the effect of improving electrical conductivity

Active Publication Date: 2020-09-04
BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, beryllium in beryllium bronze is toxic, and safety issues in the production and use of beryllium bronze cannot be ignored

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The specific chemical composition of the alloy is as follows: C: 0.005%, Ti: 2.7%, Ce: 0.05%, W: 0.03%, Ta: 0.08%, Hf: 0.06%, Fe: 0.10%, Cu and inevitable impurities .

[0023] Electrolytic copper with a purity of 99.9%, sponge titanium with a purity of 99.9%, C, Ce, W, Ta, Hf, and Fe are mixed in proportion and put into a crucible. Smelting in a vacuum induction furnace, the alloy refining temperature is 1250 °C, the tapping temperature is 1200 °C, and it is cast into a steel ingot. The ingot is heat-retained at 850°C and forged into a bar with a diameter of 60mm, and hot-rolled at 900°C with heat preservation, the initial deformation is controlled to 50%, and the total deformation of hot rolling is 97%. Subsequently, solid solution was carried out at 800 °C for 10 min, and then aging was carried out at 400 °C for 20 min. After the finished product is ground, a bar with a diameter of 10mm is obtained. Its tensile strength is 1242MPa, its yield strength is 1128MPa, i...

Embodiment 2

[0025] The specific chemical composition of the alloy is as follows: C: 0.008%, Ti: 3.2%, Ce: 0.04%, W: 0.02%, Ta: 0.03%, Fe: 0.18%, and Cu and inevitable impurities.

[0026] Electrolytic copper with a purity of 99.9%, sponge titanium with a purity of 99.9%, C, Ce, W, Ta, and Fe are mixed in proportion and put into a crucible. Smelting in a vacuum induction furnace, the alloy refining temperature is 1245 ℃, the tapping temperature is 1195 ℃, and it is cast into steel ingots. The steel ingot was heat-preserved and forged into a bar with a diameter of 160 mm at 850°C, and hot-rolled at 890°C, with the initial deformation controlled at 30%, and the total hot-rolled deformation at 61%. Subsequently, solid solution was carried out at 850 °C for 60 min, and then aging was carried out at 400 °C for 120 min. After the finished product is ground, a bar with a diameter of 100mm is obtained. Its tensile strength is 1123MPa, its yield strength is 1050MPa, its thermal conductivity is 10...

Embodiment 3

[0028] The specific chemical composition of the alloy is: C: 0.008%, Ti: 3.0%, Ce: 0.08%, W: 0.03%, Hf: 0.06%, Fe: 0.15%, and Cu and inevitable impurities.

[0029] Electrolytic copper with a purity of 99.9%, sponge titanium with a purity of 99.9%, C, Ce, W, and Fe are mixed in proportion and put into a crucible. Smelting in a vacuum induction furnace, the alloy refining temperature is 1250 °C, the tapping temperature is 1195 °C, and it is cast into ingots. The steel ingot is heat-retained at 850°C and forged into a bar with a diameter of 100 mm, and then hot-rolled at 880°C, the initial deformation is controlled to 35%, and the total hot-rolling deformation is 70%. Subsequently, solid solution was carried out at 830 °C for 45 min, and then aging was carried out at 410 °C for 100 min. After the finished product is ground, a bar with a diameter of 54mm is obtained. Its tensile strength is 1182MPa, its yield strength is 1070MPa, its thermal conductivity is 111W / (m °C), its ele...

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Abstract

The invention discloses a high-strength titanium-copper alloy bar suitable for conductive elastic components and a preparation method, and belongs to the technical field of titanium-copper alloy. Thechemical compositions of the high-strength titanium-copper alloy bar comprise, by weight, 0-0.01% of C, 2.6-3.4% of Ti, 0.001-0.2% of Ce, W+Ta+Hf+Fe<=0.3%, the balance being Cu and inevitable impurities. The preparation process comprises vacuum smelting, forging, hot rolling, solid solution treatment, aging treatment, finished product grinding and quality inspection. Comprehensive properties, suchas cold and hot processing properties, mechanical properties, thermal conductivity and electrical conductivity of alloy are improved by adding Ce, W, Ta, Hf, Fe and other elements into alloy and applying a matched preparation process. Product properties are as follows: tensile strength 1100-1250 MPa, yield strength 1000-1150 MPa, thermal conductivity 92-125 W / (m.DEG C), electrical conductivity 19-27% IACS, grain size 15-90 [mu]m, hardness 300-380HV and ultrasonic testing reaching above level A. The matching of high strength, high thermal conductivity and high electrical conductivity of the alloy meets the requirements of strength and heat dissipation performance of conductive elastic components.

Description

technical field [0001] The invention belongs to the technical field of titanium-copper alloys, and relates to a high-strength titanium-copper alloy rod suitable for conductive elastic components and a preparation method thereof. Background technique [0002] Ultra-high-strength copper alloy materials are a strategic emerging industry in my country. Ultra-high-strength elastic copper alloys mainly refer to conductive elastic copper alloys with tensile strength exceeding 1000 MPa. They are mainly used in the preparation of conductive elastic components, such as machine instruments, molds, temperature controllers, etc. Relays, auto parts, etc. Beryllium bronze is a typical precipitation-strengthened alloy. It is widely used because of its high strength, hardness, elastic limit, and a series of advantages such as corrosion resistance, wear resistance, fatigue resistance, and low temperature resistance. King of Materials". However, beryllium in beryllium bronze is toxic, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22F1/08H01B1/02
CPCC22C9/00C22F1/08H01B1/026
Inventor 李国超魏然杨爱红柳海波章清泉王超吴会云文新理
Owner BEIJING BEIYE FUNCTIONAL MATERIALS CORP
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