Copper-base alloy and preparation method thereof

A technology for a copper-based alloy and a manufacturing method, which are applied in the field of copper-based alloys and their preparation, can solve the problems of alloy production and use day restrictions, human and ecological hazards, loss of beryllium copper alloys, and the like, and achieve good high-temperature thermal stability, The effect of excellent performance and high elastic thermal stability

Active Publication Date: 2008-06-04
GRIKIN ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the beryllium copper alloy still has the following serious disadvantages in industrial production and application: firstly, due to the industrial pollution caused by beryllium, it has caused great harm to the human body and ecology, making the production and use of the alloy increasingly restricted; secondly, Because in industrial production, the intermediate alloy must be refined first and then prepared into beryllium copper alloy, so the cost is relatively expensive; thirdly, the heat treatment process is very sensitive to the performance of beryllium copper alloy, so the operation is difficult, the performance is not easy to guarantee, and the yield rate often occurs Low phenomenon; and, when used at a higher temperature greater than 150 ° C, beryllium copper alloy will cause serious loss of bullets, so it cannot meet the design requirements of the material

Method used

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  • Copper-base alloy and preparation method thereof
  • Copper-base alloy and preparation method thereof
  • Copper-base alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 1. Material melting

[0030] 530 grams of commercially available electrolytic copper, 210 grams of nickel, 210 grams of manganese and 50 grams of iron were batched and smelted in a vacuum induction furnace. The melting temperature is 1250°C, the steel mold is poured, and the pouring temperature is 1100°C.

[0031] 2. Thermomechanical treatment

[0032] Process 1: First, the ingot is hot forged at 850°C, annealed at 750°C for 1.5h, and then rapidly cooled to room temperature; aging treatment is performed at 420°C for 48h.

[0033] Process 2: First, the ingot is hot forged at 850°C, annealed at 750°C for 1.5h, and then rapidly cooled to room temperature; cold rolled, and the cold rolling deformation is 30%. After cold rolling, carry out aging treatment, the aging temperature is 420 ℃, and the time is 16h.

[0034] Process 3: Firstly, the cast ingot is hot forged at 850°C, annealed at 750°C for 1.5h, and then rapidly cooled to room temperature; cold rolled, and the cold...

Embodiment 2

[0044] 1. Material melting

[0045] 550 grams of commercially available electrolytic copper, 300 grams of nickel, 140 grams of manganese and 10 grams of iron were batched and smelted in a vacuum induction furnace. The melting temperature is 1300°C, the steel mold is poured, and the pouring temperature is 1150°C.

[0046] 2. Thermomechanical treatment

[0047] The ingot is firstly hot-rolled at 750°C, annealed at 650°C for 2 hours, and then rapidly cooled to room temperature; cold-rolled, and the cold-rolled deformation is 60%. After cold rolling, carry out aging treatment, the aging temperature is 400°C, and the time is 8h.

[0048] Inductive plasma emission spectrometry (ICP) was used to analyze the content of alloy elements and impurities, as shown in Table 3.

[0049] Table 3. Impurity Chemical Composition of Alloys

[0050] the element

Al

Pb

Sb

Bi

P

no greater than

wt%

0.002

0.002

0.002 ...

Embodiment 3

[0057] 1. Material melting

[0058] 480 grams of commercially available electrolytic copper, 140 grams of nickel, 300 grams of manganese and 80 grams of iron were batched and smelted in a vacuum induction furnace. The melting temperature is 1250°C, the steel mold is poured, and the pouring temperature is 1100°C.

[0059] 2. Thermomechanical treatment

[0060] First, the ingot was hot forged at 900°C, annealed at 800°C for 40 minutes, and then rapidly cooled to room temperature; cold rolled, with a deformation of 20%. After cold rolling, carry out aging treatment, the aging temperature is 450 ℃, and the time is 24h.

[0061] Inductive plasma emission spectrometry (ICP) was used to analyze the content of alloy elements and impurities, as shown in Table 5.

[0062] Table 5. Impurity Chemical Composition of Alloys

[0063] the element

Al

Pb

Sb

Bi

P

no greater than

wt%

0.002

0.002

0.002

...

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Abstract

The invention relates to a copper base alloy and a preparation method for the copper base alloy. Chemical compositions and weight percentage of the copper base alloy are that: nickel: 14.0 to 30.0 percent; manganese: 14.0 to 30.0 percent; ferrum: 1.0 to 8.0 percent; the residual is copper; moreover, aluminum: less than 0.002 percent; plumbum: less than 0.002 percent; antimony: less than 0.002 percent; bismuth: less than 0.002 percent; phosphorus: less than 0.01 percent; the residual composition is copper. The copper base alloy with high performance is prepared after smelting and thermo-mechanical treatment, microstructure of the alloy can be controlled to be nearly equiaxial crystal particles with the diameter of 50 micrometers. The alloy has ageing strengthening effect. When the alloy is stretched under room temperature by ageing after cold deformation, the breaking strength sigma b reaches 1480 MPa at maximum; the extensibility delta 5 reaches 6 percent at maximum; the Vickers hardness Hv reaches 470 at maximum. When the alloy is stretched under high temperature of 400 DEG C, the breaking strength sigma b reaches 1100MPa at maximum, and the extensibility delta 5 reaches 6 percent at maximum.

Description

technical field [0001] The invention relates to a copper-based alloy and a preparation method thereof, in particular to a copper-based alloy with high strength, high elasticity and good thermal stability and a preparation method thereof. Background technique [0002] Copper and its alloys are widely used in electrical, electrical, chemical, light industry, machinery manufacturing, transportation, electronic communication and other industries due to their good thermal conductivity, electrical conductivity, corrosion resistance, high plasticity and wear resistance. [0003] Beryllium copper is the most representative of copper-based elastic materials. However, the beryllium copper alloy still has the following serious disadvantages in industrial production and application: firstly, due to the industrial pollution caused by beryllium, it has caused great harm to the human body and ecology, making the production and use of the alloy increasingly restricted; secondly, Because in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C9/05C22C9/06C22C30/00C22C1/02C22F1/08
Inventor 王欣平杨亚卓李宏孙秀霞廖赞王彬张晓辉何金江
Owner GRIKIN ADVANCED MATERIALS
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