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Cu-Ni-Si-Fe alloy and preparation method and application thereof

A cu-ni-si-fe, alloy technology, applied in the direction of metal/alloy conductors, conductors, conductive materials, etc., can solve the problems of reduced yield, large casting stress, and difficult mining, etc., to improve conductivity and improve The effect of intensity

Active Publication Date: 2022-05-27
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reserves of cobalt ore resources are relatively scarce, mining is difficult, and the refining technology is complicated, and the cost of cobalt metal is rising year by year
In addition, in the process of large-scale semi-continuous casting, the addition of Co element in the casting process of large-scale Cu-Ni-Si alloy ingots tends to generate large casting stress, which leads to hot cracking in subsequent manufacturing and processing, and reduces the yield

Method used

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  • Cu-Ni-Si-Fe alloy and preparation method and application thereof
  • Cu-Ni-Si-Fe alloy and preparation method and application thereof
  • Cu-Ni-Si-Fe alloy and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0095] As a preferred embodiment, in terms of mass percentage, the Cu-Ni-Si-Fe alloy includes the following components:

[0096] Ni: 1.5wt%~4.8wt%,

[0097] Co: 0wt%~0.6wt%,

[0098] Si: 0.6wt%~1.8wt%,

[0099] Fe: 0.3wt%~1.4wt%,

[0100] Mg: 0.05wt%~0.15wt%,

[0101] The balance is copper.

[0102] In some embodiments of the present invention, a method for preparing the above-mentioned Cu-Ni-Si-Fe alloy is provided, comprising the following steps:

[0103] S1: after the raw materials are melted according to the proportion, add a covering agent and a refining agent for smelting, casting and molding to obtain an ingot;

[0104] S2: homogenize the ingot to obtain a billet;

[0105] S3: After the billet is subjected to hot working and blanking treatment, the first water cooling treatment is performed to obtain a hot working billet;

[0106] S4: After the hot working billet is subjected to solution treatment and second water cooling treatment in a protective atmosphere, fir...

Embodiment 1

[0127] This embodiment prepares a Cu-Ni-Si-Fe alloy, specifically:

[0128] According to the composition, Ni: 4.5 wt %, Co: 0.2 wt %, Si: 1.2 wt %, Fe: 0.6 wt %, Mg: 0.1 wt %, and the balance is Cu.

[0129] Prepare materials according to the weight percentage of elemental composition, first add the copper source into the melting furnace for melting, then add the copper-silicon master alloy, nickel source, cobalt source, iron source in turn, finally add the copper-magnesium master alloy, and add the covering agent when the raw materials begin to melt and refining agent.

[0130] The mulch charcoal is baked to red heat at 500°C.

[0131] Smelting was carried out at 1300°C in the atmosphere, cast in an iron mold at 1200°C, and after cooling, it was milled by a lathe to remove surface defects.

[0132] After cooling in protective atmosphere 2%H 2 +Margin N 2 Homogenization treatment was carried out in the annealing temperature at 950 °C and the annealing time was 4 h.

[013...

Embodiment 2

[0138] This embodiment prepares a Cu-Ni-Si-Fe alloy, specifically:

[0139] According to the composition, Ni: 4.5 wt %, Co: 0.2 wt %, Si: 1.6 wt %, Fe: 1.0 wt %, Mg: 0.1 wt %, and the balance is Cu.

[0140] Prepare materials according to the weight percentage of elemental composition, first add the copper source into the melting furnace for melting, then add the copper-silicon master alloy, nickel source, cobalt source, iron source in turn, finally add the copper-magnesium master alloy, and add the covering agent when the raw materials begin to melt And refining agent, covering agent charcoal bake at 500 ℃ to red heat.

[0141] Smelting was carried out at 1300°C in the atmosphere, cast in an iron mold at 1200°C, and after cooling, it was milled by a lathe to remove surface defects.

[0142] After cooling in a protective atmosphere of 2% H 2 +Margin N 2 and 950°C for 4 hours, followed by hot rolling with a reduction of 80%. After the hot-rolled sheet is water-cooled, it is...

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Abstract

The invention provides a Cu-Ni-Si-Fe alloy as well as a preparation method and application of the Cu-Ni-Si-Fe alloy. According to the alloy, through component optimization, a base metal Fe element is adopted to replace part or even all Co elements in a Cu-Ni-Co-Si alloy, high-hardness and high-heat-resistance nanoscale FeSi phase particles are formed by means of the strong atom binding force between Fe and Si, and the low-cost, high-strength and high-conductivity alloy is obtained. The invention further provides a preparation method and application of the alloy.

Description

technical field [0001] The invention belongs to the technical field of copper alloy materials, and in particular relates to a Cu-Ni-Si-Fe series alloy and a preparation method and application thereof. Background technique [0002] Cu-Ni-Si alloy has high strength, high elasticity and excellent electrical conductivity, thermal conductivity and processing and forming properties, and has wide application prospects in aerospace, transportation, electronic information and other fields. With the development of electronic information and large-scale integrated circuit industries, higher requirements are put forward for high-performance Cu-Ni-Si alloys. Represented by the Cu-Ni-Co-Si alloys C70250 and C70350 developed by Olin Company, because of their excellent stress relaxation resistance and punching performance, they have become the first choice for the manufacture of second-generation integrated circuit lead frames. The main components of the C70350 alloy are Ni: 1.3wt%-1.8wt%,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/10C22C9/00C22C1/03C22C1/06C22F1/08H01B1/02
CPCC22C9/06C22C9/10C22C9/00C22C1/03C22C1/06C22F1/08C22F1/002H01B1/026
Inventor 姜雁斌秦柳馨李周吴子潇辛钊
Owner CENT SOUTH UNIV
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