High-strength, high-conductivity and high-temperature-resistant Cu-Cr-Nb-Zr alloy and preparation method thereof

A cu-cr-nb-zr, high temperature resistant technology, applied in metal processing equipment, manufacturing tools, welding equipment, etc.

Pending Publication Date: 2020-07-07
SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the existing technical problems, the present invention provides a high-strength, high-conductivity, high-temperature resistant Cu-Cr-Nb-Zr alloy and a preparation method thereof

Method used

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  • High-strength, high-conductivity and high-temperature-resistant Cu-Cr-Nb-Zr alloy and preparation method thereof
  • High-strength, high-conductivity and high-temperature-resistant Cu-Cr-Nb-Zr alloy and preparation method thereof
  • High-strength, high-conductivity and high-temperature-resistant Cu-Cr-Nb-Zr alloy and preparation method thereof

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Effect test

Embodiment 1

[0036] A high-strength, high-conductivity and high-temperature-resistant Cu-Cr-Nb-Zr alloy, the weight percentage of the alloy is composed of: Cr: 6.65wt%, Nb: 5.84wt%, Zr: 0.32wt%, Fe: 0.004wt%, O: 0.015wt%, Cu: 87.171%, by controlling the composition ratio between Cr and Nb, using the synergistic effect of the metal compound formed between Cr and Nb under this ratio, the conductivity of the material can be improved without reducing the conductivity of the material. Strength, while Cr 2The Nb hardening phase can refine and control the grain size of copper, and further improve the strength of the copper alloy. Cu is made of electrolytic copper plate with a purity of 99.990%, Cr is added by CuCr10 master alloy, Zr is added by CuZr master alloy, and Nb is made of CrNb38 master alloy way to join.

[0037] The preparation method of the above-mentioned high-strength, high-conductivity and high-temperature resistant Cu-Cr-Nb-Zr alloy specifically includes the following steps:

[0...

Embodiment 2

[0047] A high-strength, high-conductivity, high-temperature resistant Cu-Cr-Nb-Zr alloy, the weight percentage of the alloy is composed of: Cr: 6.52wt%, Nb: 5.53wt%, Zr: 0.25wt%, Fe: 0.003wt%, O: 0.01wt%, Cu: 87.687%, by controlling the composition ratio between Cr and Nb, using the synergistic effect of the metal compound formed between Cr and Nb under this ratio, the conductivity of the material can be improved without reducing the conductivity of the material. Strength, while Cr 2 The Nb hardening phase can refine and control the grain size of copper, and further improve the strength of the copper alloy. Cu is made of electrolytic copper plate with a purity of 99.998%, Cr is added by CuCr10 master alloy, Zr is added by CuZr master alloy, and Nb is made of CrNb38 master alloy way to join.

[0048] The preparation method of the above-mentioned high-strength, high-conductivity and high-temperature resistant Cu-Cr-Nb-Zr alloy specifically includes the following steps:

[0049...

Embodiment 3

[0058] A high-strength, high-conductivity and high-temperature-resistant Cu-Cr-Nb-Zr alloy, the weight percentage of the alloy is composed of: Cr: 6.67wt%, Nb: 5.86wt%, Zr: 0.31wt%, Fe: 0.002wt%, O: 0.005wt%, Cu: 87.153%, by controlling the composition ratio between Cr and Nb, using the synergistic effect of the metal compound formed between Cr and Nb under this ratio, the material conductivity can be improved without reducing the material conductivity. Strength, while Cr 2 The Nb hardening phase can refine and control the grain size of copper, and further improve the strength of the copper alloy. Cu is made of electrolytic copper plate with a purity of 99.999%, Cr is added by CuCr10 master alloy, Zr is added by CuZr master alloy, and Nb is made of CrNb38 master alloy way to join.

[0059] The preparation method of the above-mentioned high-strength, high-conductivity and high-temperature resistant Cu-Cr-Nb-Zr alloy specifically includes the following steps:

[0060] (1) Ingr...

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Abstract

The invention discloses a high-strength, high-conductivity and high-temperature-resistant Cu-Cr-Nb-Zr alloy and a preparation method thereof, and belongs to the technical field of copper alloys. The preparation process of a copper alloy combustion chamber lining comprises the steps of burdening, atomizing, sheath extruding, plate rolling, plate pressing, friction welding, spinning forming and finished product machining. The Cu-Cr-Nb-Zr alloy has relatively high high-temperature-resistant strength and good ductility, and the low-cycle fatigue performance and the thermal conductivity of the Cu-Cr-Nb-Zr alloy are superior to those of other high-temperature-resistant copper alloys; the tensile strength of the alloy is larger than or equal to 500 MPa, the electric conductivity of the alloy is larger than or equal to 65% IACS, the alloy has the excellent high-temperature resistance that the strength is not obviously reduced after brazing at 935 DEG C, the strength is only reduced by about 30MPa at the temperature condition of 935 DEG C-1000 DEG C, and the softening temperature is larger than 900 DEG C; the alloy is suitable for any heat exchange high-temperature-resistant occasions suchas injection molds, resistance welding electrodes, nozzles, rocket combustion chamber linings and carrier rocket nozzles.

Description

technical field [0001] The invention belongs to the technical field of copper alloys, and in particular relates to a high-strength, high-conductivity, high-temperature-resistant Cu-Cr-Nb-Zr alloy and a preparation method thereof. Background technique [0002] The combustion chamber is an important component of the liquid engine, which produces all or most of the thrust of the liquid engine. The liquid propellant enters the combustion chamber through the injector, completes the atomization, mixing and combustion process, produces high-temperature and high-pressure gas, and converts the chemical Energy can be converted into heat energy, and the gas converts heat energy into kinetic energy in the nozzle, and is discharged from the outlet of the nozzle at a high speed to generate engine thrust. [0003] Usually, the liquid rocket engine combustion chamber adopts regenerative cooling to ensure the wall temperature is within the allowable range, that is, the combustion chamber she...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/04B22F9/08B22F3/20B22F3/15B22F3/18B22F3/24B23K20/12
CPCB22F3/15B22F3/18B22F3/20B22F3/24B22F9/082B22F2003/247B22F2009/0824B22F2009/0848B22F2009/088B23K20/12C22C1/0425C22C9/00
Inventor 马明月庾高峰张航李小阳王聪利吴斌张琦靖林
Owner SHAANXI SIRUI ADVANCED MATERIALS CO LTD
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