High-strength titanium-copper alloy bar suitable for conductive elastic component and preparation method

A technology of titanium-copper alloy and components, which is applied in the field of high-strength titanium-copper alloy rods and its preparation, can solve problems such as toxicity and safety issues that cannot be ignored, and achieve improved electrical conductivity, high thermal conductivity, and high electrical conductivity. Effect

Active Publication Date: 2019-02-15
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 mass percentage of the alloy is: C: 0.005%, Ti: 2.7%, Ce: 0.05%, W: 0.03%, Ta: 0.08%, Hf: 0.06%, Fe: 0.10%, remaining Cu and unavoidable impurities .

[0023] Electrolytic copper with a purity of 99.9%, titanium sponge with a purity of 99.9%, C, Ce, W, Ta, Hf, and Fe are mixed in proportion and loaded into a crucible. Smelting is carried out in a vacuum induction furnace, the alloy refining temperature is 1250°C, the tapping temperature is 1200°C, and cast into steel ingots. The steel ingot is forged into a 60mm diameter bar at 850°C, and hot rolled at 900°C. The first deformation is controlled at 50%, and the total deformation of hot rolling is 97%. Then solid solution was carried out at 800°C with a holding time of 10 minutes, and then aged at 400°C with a holding time of 20 minutes. Obtain a 10mm diameter rod through finished product grinding. Its tensile strength is 1242MPa, yield strength is 1128MPa, thermal conductivity is 98W / ...

Embodiment 2

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

[0026] Electrolytic copper with a purity of 99.9%, titanium sponge with a purity of 99.9%, C, Ce, W, Ta, Fe are mixed in proportion and loaded into a crucible. It is smelted in a vacuum induction furnace, the alloy refining temperature is 1245°C, the tapping temperature is 1195°C, and cast into steel ingots. The steel ingot is forged into a bar with a diameter of 160mm at 850°C, and hot-rolled at 890°C. The first deformation is controlled to 30%, and the total deformation of hot rolling is 61%. Then solid solution was carried out at 850°C, and the holding time was 60 minutes, and then aging was carried out at 400°C, and the holding time was 120 minutes. Obtain a 100mm diameter rod through finished product grinding. Its tensile strength is 1123MPa, yield strength is 1050MPa, thermal conductivit...

Embodiment 3

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

[0029] Electrolytic copper with a purity of 99.9%, titanium sponge with a purity of 99.9%, C, Ce, W, and Fe are mixed in proportion and loaded into a crucible. Smelting is carried out in a vacuum induction furnace, the alloy refining temperature is 1250°C, the tapping temperature is 1195°C, and cast into steel ingots. The steel ingot is heat-preserved at 850°C and forged into a bar with a diameter of 100mm, and then hot-rolled at 880°C with heat-preservation. The initial deformation is controlled to 35%, and the total deformation of hot rolling deformation is 70%. Then solid solution was carried out at 830°C with a holding time of 45 minutes, and then aged at 410°C with a holding time of 100 minutes. Obtain a diameter 54mm rod through finished product grinding. Its tensile strength is 1182MPa, yie...

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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 strategic emerging industries in my country. Ultra-high-strength elastic copper alloys mainly refer to conductive elastic copper alloys with a tensile strength exceeding 1000MPa. They are mainly used in the preparation of conductive elastic components, such as machine instruments, molds, temperature controllers, Relays, auto parts, etc. Beryllium bronze is a typical precipitation-strengthened alloy. 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, it has been widely used and is known as "colored elastic alloy". The King of Materials". However, ...

Claims

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Application Information

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Patent Type & Authority Applications(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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