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Ultrahigh-strength high-toughness high-conductivity copper-nickel-tin alloy and preparation method thereof

A copper-nickel-tin, ultra-high-strength technology, which is applied in the field of ultra-high-strength, high-toughness, high-conductivity copper-nickel-tin alloy and its preparation, can solve the problems that the strength and plasticity of the alloy cannot be greatly improved, and the amount of nanoscale precipitates is small, and achieve high Intensity, ease of operation, and strength-boosting effect

Active Publication Date: 2019-07-30
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It mainly controls the performance of the alloy by controlling the aging temperature and aging time, but during the aging process, the precipitation of nanoscale precipitates is very small, which cannot greatly improve the strength and plasticity of the alloy.

Method used

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  • Ultrahigh-strength high-toughness high-conductivity copper-nickel-tin alloy and preparation method thereof
  • Ultrahigh-strength high-toughness high-conductivity copper-nickel-tin alloy and preparation method thereof
  • Ultrahigh-strength high-toughness high-conductivity copper-nickel-tin alloy and preparation method thereof

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Embodiment 1

[0042] An ultra-high-strength, high-toughness, and high-conductivity copper-nickel-tin alloy of the present invention, in terms of mass percentage, the ultra-high-strength, high-toughness, and high-conductivity copper-nickel-tin alloy includes the following components: 15% nickel, 8% tin, and 0.15% yttrium , cerium 0.1%, scandium 0.05%, niobium 0.2%, the balance is copper and unavoidable impurities.

[0043] The preparation method of the ultra-high-strength, high-toughness and high-conductivity copper-nickel-tin alloy of the present embodiment comprises the following steps:

[0044] (1) According to the mass percentage of the element composition, the material is prepared, and the alloy powder is prepared by the gas atomization method, and the particle size of the alloy powder is 150 μm;

[0045] (2) Put the alloy powder after step (1) into the cast iron mold and seal it, put the bag into the hot isostatic pressing machine, fill the hot isostatic pressing chamber with nitrogen ...

Embodiment 2

[0050] An ultra-high-strength, high-toughness and high-conductivity copper-nickel-tin alloy of the present invention, in terms of mass percentage, the ultra-high-strength, high-toughness and high-conductivity copper-nickel-tin alloy includes the following components: nickel 15%, tin 8%, yttrium 0.2% , 0.05% cerium, 0.1% scandium, 0.15% niobium, and the balance is copper and unavoidable impurities.

[0051] The preparation method of the ultra-high-strength, high-toughness and high-conductivity copper-nickel-tin alloy of the present embodiment comprises the following steps:

[0052] (1) According to the mass percentage of the element composition, the material is prepared, and the alloy powder is prepared by the gas atomization method, and the particle size of the alloy powder is 120 μm;

[0053] (2) Put the alloy powder after step (1) into the cast iron mold and seal it, put the bag into the hot isostatic pressing machine, fill the hot isostatic pressing chamber with nitrogen an...

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Abstract

The invention provides an ultrahigh-strength high-toughness high-conductivity copper-nickel-tin alloy which contains nickel, tine, yttrium, niobium, scandium and cerium elements. The total mass of theyttrium, niobium, scandium and cerium elements is less than or equal to 0.5 percent of the mass of the copper-nickel-tin alloy. The copper-nickel-tin alloy has high strength, toughness and conductivity, and is wide in application range. The invention further provides a preparation method of the copper-nickel-tin alloy. The preparation method of the copper-nickel-tin alloy concretely comprises thesteps of preparing materials according to the mass percent of element compositions, and adopting a gas atomization method for preparing to obtain alloy powder; adopting hot isostatic pressure sintering on the alloy powder to obtain a copper-nickel-tin alloy ingot blank; and carrying out solution treatment and warm deformation strengthening treatment on the copper-nickel-tin alloy ingot blank so as to obtain the ultrahigh-strength high-toughness high-conductivity copper-nickel-tin alloy. According to the preparation method, multiple compound factor strengthening and toughening copper alloys are implemented and utilized, and the obtained copper-nickel-tin alloy has the characteristics of refined crystalline strengthening, strain strengthening, dispersion strengthening and precipitation hardening at the same time so as to obtain high strength, toughness and conductivity.

Description

technical field [0001] The invention belongs to the technical field of strengthening and toughening and processing metal materials, and in particular relates to an ultra-high-strength, high-toughness, and high-conductivity copper-nickel-tin alloy and a preparation method thereof. Background technique [0002] With the development of industries such as aviation, aerospace, oil and gas exploration, and navigation, higher requirements have been put forward for the wear-resistant and corrosion-resistant copper alloy materials used for bearings in key parts. High service life, high strength, high load, high toughness, high reliability, excellent wear and corrosion resistance and environmental protection have become the main direction of wear and corrosion resistant copper alloy materials. The existing wear-resistant and corrosion-resistant copper alloys mainly include QAl 10-3-1.5 aluminum bronze, QAl 10-4-4 aluminum bronze, QAl 10-4-4-1 aluminum bronze, ZBAl 16-3-1.5 aluminum cu...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22C1/04C22F1/08
CPCC22C1/0425C22C9/06C22F1/002C22F1/08
Inventor 甘雪萍成金娟周科朝李周
Owner CENT SOUTH UNIV
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