热轧对等离子沉积Cu-Fe合金组织与性能的影响

高子杰; 王善林; 陈玉华; 涂文斌

doi:10.3969/j.issn.1674-6457.2025.09.019

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精密成形工程 ›› 2025, Vol. 17 ›› Issue (9) : 195-203. DOI: 10.3969/j.issn.1674-6457.2025.09.019

铜合金成形

热轧对等离子沉积Cu-Fe合金组织与性能的影响

高子杰, 王善林^*, 陈玉华, 涂文斌

作者信息 +

Effect of Hot Rolling on Microstructure and Properties of Plasma Deposited Cu-Fe Alloys

GAO Zijie, WANG Shanlin^*, CHEN Yuhua, TU Wenbin

Author information +

文章历史 +

摘要

目的制造一种高铁含量的铜铁合金,并确保其在具有良好强度和塑性的同时,依然保持优良的导电性能,以满足工业生产对高性能材料的需求。方法采用等离子沉积技术制备尺寸为200 mm×8 mm×36 mm的铜铁合金单臂墙,将材料在900 ℃下热轧,轧制量为70%。通过电子显微镜和X射线衍射仪对沉积态和热轧态的铜铁合金微观组织和物相进行观察,并分析沉积态和热轧态铜铁合金的力学性能和导电性能。结果经热轧后,合金内部的Fe相颗粒由5~10 μm的球形或椭圆形晶粒变为30~50 μm的树枝晶,并沿轧制方向定向排列,沉积态合金内部的孔隙等缺陷被消除。因为热轧使合金中的Fe相颗粒熔合,尺寸增加,所以铁相在合金中的密度下降。在性能方面,相比于沉积态合金,轧制态合金的平均硬度提高了30%,达到140HV0.5;抗拉强度提高了120%,达到434 MPa;延伸率提高到24.7%,导电率提高到89.8%IACS。结论采用等离子沉积结合热轧工艺制造了具有一定强度和塑性且导电性能良好的高铁含量的铜铁合金,并为工业生产提供了一种新方法。

Abstract

The work aims to fabricate a copper-iron alloy with high iron content and to ensure that it has good strength and plasticity while still maintaining its excellent electrical conductivity to meet the demand for high-performance materials in industrial production. Copper-iron alloy single-arm walls with a length, width and height of 200 mm×8 mm×36 mm were prepared by plasma deposition technique, after which the materials were hot rolled at 900 ℃ with a rolling volume of 70%. The microstructure and physical phase of the copper-iron alloy in the deposited and hot-rolled states were observed by electron microscope and X-ray diffractometer, and the mechanical properties and electrical conductivity changes of the copper-iron alloy in the deposited and hot-rolled states were analyzed. After hot rolling, the Fe phase particles inside the alloy were changed from 5-10 μm spherical or oval grains to 30-50 μm dendritic crystals, which were oriented and arranged along the rolling direction, and defects such as pores inside the alloy in the sedimentary state were eliminated. The density of the Fe phase in the alloy decreased because hot rolling caused the Fe phase particles in the alloy to fuse and increase in size. In terms of properties, compared with the alloy in the deposited state, the average hardness of the alloy in the rolled state was increased by 30% to 140HV0.5; the tensile strength was increased by 120% to 434 MPa; the elongation was increased to 24.7% and the electrical conductivity was increased to 89.8% IACS. Plasma deposition combined with the hot rolling process fabricates high Fe-containing CuFe alloys with a certain degree of strength and plasticity and good electrical conductivity, and provides a new method for industrial production.

导出引用

高子杰, 王善林, 陈玉华, 涂文斌. 热轧对等离子沉积Cu-Fe合金组织与性能的影响[J]. 精密成形工程. 2025, 17(9): 195-203 https://doi.org/10.3969/j.issn.1674-6457.2025.09.019

GAO Zijie, WANG Shanlin, CHEN Yuhua, TU Wenbin. Effect of Hot Rolling on Microstructure and Properties of Plasma Deposited Cu-Fe Alloys[J]. Journal of Netshape Forming Engineering. 2025, 17(9): 195-203 https://doi.org/10.3969/j.issn.1674-6457.2025.09.019

中图分类号： TG339

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