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A kind of copper alloy with high strength, high conductivity and high wear resistance and preparation method thereof
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A technology of copper alloy and high conductivity, which is applied in the field of metal materials to achieve high strength, high conductivity and prolong service life
Active Publication Date: 2022-03-11
DALIAN UNIV OF TECH
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[0004] The object of the present invention is to propose a copper alloy with high strength, high conductivity and high wear resistance, which can effectively avoid the second phase hard The mutual interference between particles and alloying elements has excellent wear resistance and mechanical properties
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Embodiment 1
[0028] This embodiment discloses a high-strength, high-conductivity, high-wear-resistant copper alloy. The copper alloy includes the following components by weight: 1% Cr, 0.2% Zr, and 0.2% Hf, and the balance is Cu, hereinafter referred to as Cu -1%Cr-0.2%Zr-0.2%Hf.
[0029] The preparation method of the copper alloy with high strength, high conductivity and high wear resistance of the present embodiment comprises the following steps:
[0030] The components are mixed according to the weight ratio, after hot rolling and billeting, solution treatment is carried out, the solution temperature is 972 ° C, the holding time is 45 minutes, and then water cooling and quenching;
[0031] After removing defects such as the surface oxide layer, carry out rolling for the first time, the rolling deformation is 60%, each pass decreases by 10%, and the rolling temperature is 25° C. (ie room temperature rolling).
[0032] For the first aging treatment, the aging temperature is selected as 4...
Embodiment 2
[0040] This embodiment discloses a copper alloy with high strength, high conductivity and high wear resistance. The copper alloy includes components Cu-1%Cr-0.2%Zr-0.2%Hf in the following weight ratio.
[0041] The preparation method of the copper alloy with high strength, high conductivity and high wear resistance of the present embodiment comprises the following steps:
[0042] After the billet is hot-rolled, solution treatment is carried out, the solution temperature is 972 ° C, the holding time is 45 minutes, and then water-cooled and quenched;
[0043]After removing defects such as the surface oxide layer, the first rolling is carried out, the rolling deformation is 60%, each pass decreases by 10%, and the rolling temperature is -150°C (ie low temperature rolling).
[0044] For the first aging treatment, the aging temperature is selected as 400°C, and the aging time is selected as 120min.
[0045] In the second rolling, the rolling deformation is 30%, each pass is reduce...
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Abstract
The invention provides a high-strength, high-conductivity, high-wear-resistant copper alloy and a preparation method thereof. The high-strength, high-conductivity, high-wear-resistance copper alloy includes: Cr: 0.7-1.5wt%, the sum of Zr and Hf: 0.2- 0.6wt%, the balance is Cu. The invention also discloses a method for preparing a high-strength, high-conductivity, high-wear-resisting copper alloy, which includes the following steps: after hot-rolling and billeting, solid solution treatment is carried out, and after the surface oxide layer is removed, the following steps are carried out in sequence: the first rolling, the second First aging treatment, second rolling and second aging treatment. The preparation method of the high-strength, high-conductivity, high-wear-resistant copper alloy of the present invention can effectively avoid the mutual interference between the second-phase hard particles and the alloy elements, and the high-strength, high-conductivity, high-wear-resistant copper alloy prepared by the method has excellent wear resistance grinding and mechanical properties.
Description
technical field [0001] The invention relates to metal material technology, in particular to a copper alloy with high strength, high conductivity and high wear resistance and a preparation method thereof. Background technique [0002] Copper and copper alloys have good mechanical properties and good electrical conductivity, so they are widely used in the fields of electronics, electricity, construction, transportation, communications, national defense and military industry. [0003] There is a trade-off between high strength and high electrical conductivity, and it is difficult to balance it at the same time. Common methods to improve the mechanical properties of materials will damage their electrical conductivity to a certain extent. Therefore, balancing the relationship between strength and conductivity becomes one of the key issues in the field of copper processing. In addition, the wear resistance of copper alloy directly affects its service life, and improving the wear ...
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