| 刘敬萱,柳青媛,周忠明,王小乐.Ni/Fe质量比对Cu-Ni-Fe-P合金组织及性能的影响[J].有色金属材料与工程,2026,47(1):36-44. |
| Ni/Fe质量比对Cu-Ni-Fe-P合金组织及性能的影响 |
| The effect of Ni/Fe mass ratio on the microstructure and properties of Cu-Ni-Fe-P alloy |
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| DOI：10.13258/j.cnki.nmme.20250812001 |
| 中文关键词: Cu-Ni-Fe-P合金 Ni/Fe质量比 维氏硬度 电导率 微观组织 |
| 英文关键词:Cu-Ni-Fe-P alloy Ni/Fe mass ratio Vickers hardness electrical conductivity microstructure |
| 基金项目:江西理工大学高层次人才科研启动基金资助项目（205200100541） |
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| 中文摘要: |
| 采用光学显微镜(optical microscope, OM)、扫描电子显微镜(scanning electron microscope, SEM)、透射电子显微镜(transmission electron microscope, TEM)、硬度和电导率试验仪器，研究了Cu-Ni-Fe-P合金成分设计、微观结构和性能之间的构效关系。结果表明，Ni/Fe质量比对合金性能具有显著调控作用，当Ni/Fe质量比为3.00时，Cu-Ni-Fe-P合金在500 ℃时效0.50 h条件下维氏硬度达到峰值，为171.5，此时析出相平均尺寸为2.2 nm，随着时效时间延长至12.00 h时，析出相平均尺寸增大到5.6 nm。Fe元素的添加降低了溶质原子的固溶度，有效抑制了基体晶格畸变，提高了合金导电性，当Ni/Fe质量比为1.00时，Cu-Ni-Fe-P合金电导率在500 ℃/12.00 h时效条件下可达峰值63.6 %IACS。其中，当Ni/Fe质量比为1.00时，500 ℃/6.00 h时效条件下，Cu-Ni-Fe-P合金的综合性能最好。 |
| 英文摘要: |
| The effects of Cu-Ni-Fe-P alloy 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 0.50 h, and the average size of the precipitated phase at this time was 2.2 nm. When the aging time was extended to 12.00 h, the average size of the precipitated phase increased to 5.6 nm. The addition of Fe element reduced the solid solubility of solute atoms, effectively inhibited the lattice 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 ℃ for 12.00 h. Among them, when the mass ratio of Ni/Fe was 1.00, under the aging condition of 500 ℃ for 6.00 h, the comprehensive performance of Cu-Ni-Fe-P alloy is the best. |
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