The effect of phosphorus addition on the age-hardening of Cu-Ni-Ti alloy

被引：0

作者：

Zhang, Lina ^{[1
]}

Zhao, Xiangqin ^{[2
]}

Lai, Jiaqing ^{[2
]}

Tian, Yihong ^{[2
]}

Zhang, Jianbo ^{[2
]}

机构：

[1] Ganan Univ Sci & Technol, Sch Intelligent Mfg & Mat Engn, Ganzhou 341000, Peoples R China

[2] Jiangxi Univ Sci & Technol, Sch Mat Sci & Engn, Ganzhou 341000, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2025年 / 12卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Cu-Ni-Ti-P; age-hardening; nano-precipitated phase; electrical conductivity; softening temperature; MICROSTRUCTURE;

D O I：

10.1088/2053-1591/adac30

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of P addition on the microstructure and properties of a Cu-Ni-Ti alloy were investigated. The relationship between evolution of precipitates and hardness, electrical conductivity and softening temperature was established. The results showed that P addition increases the hardness and electrical conductivity, while also possessing good softening resistance. After 90% hot rolling and 500 degrees C aging, the Cu-Ni-Ti-P alloy reaches its maximum hardness and electrical conductivity of 165 HV and 57.2%IACS. Furthermore, the softening temperature of Cu-Ni-Ti-P alloy reaches 720 degrees C. The addition of P promotes the precipitation of Ni atoms from the Cu matrix, reduces the concentration of solute atoms, and as a result, increases the electrical conductivity of the alloy. Furthermore, the formation of the Ni3P phase further enhances the hardness of the alloy. The P solute atoms dissolved in the matrix and the nano-scale Ni3P phase form, which may be one reason for the increase in hardness due to precipitation strengthening.

引用

页数：9