Ni/Fe质量比对Cu-Ni-Fe-P合金组织及性能的影响

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中图分类号：TG146.1 文献标志码：A

文章编号：2096-2983（2026）01-0036-09

Abstract： The effects of Cu-Ni-Fe-P ally composition design， microstructure， and properties were investigated using optical microscope （OM）， scanning electron microscope （SEM）， transmission electron microscope （TEM）， hardness testing，and electrical conductivity testing instruments. The results demonstrate that the Ni/Fe mass ratio significantly influenced the alloy's properties. When the Ni/Fe mass ratio was 3.00，the Vickers hardness of the Cu-Ni-Fe-P alloy reaches its peak at 171.5 under the condition of aging at 500° for 0.50h ， and the average size of the precipitated phase at this time was

2.2nm . When the aging time was extended to 12.00h ， the average size of the precipitated phase increased to 5.6nm . The addition of Fe element reduced the solid solubility of solute atoms， effectively inhibited the lattce distortion in the matrix and improved the electrical conductivity. When the Ni/Fe mass ratio was 1.00， the Cu-Ni-Fe-Pa alloy attained a maximum electrical conductivity of 63.6%IACS under the aging condition of 500∘C for 12.00h . Among them， when the mass ratio of Ni/Fe was 1.00， under the aging condition of 500° for 6.00h ， the comprehensive performance of Cu-Ni-Fe-P alloy is the best.

Keywords： Cu-Ni-Fe-P ally; Ni/Fe mass ratio; Vickers hardness; electrical conductivity; microstructure

近年来，微电子、集成电路和通信等行业的高速发展，对铜合金的性能提出了更高的要求，如高强度、高导电性、良好的耐腐蚀性和优异的高温耐软化性能等[1-6]。（剩余11752字）