铜业工程Issue(6)：20-28,9.DOI:10.3969/j.issn.1009-3842.2025.06.003
热处理工艺对真空压铸Cu-Ni-Si-Co-Zr合金组织与性能的影响
Microstructure and Properties of Vacuum Die Casting Cu-Ni-Si-Co-Zr Alloy after Heat Treatment
摘要
Abstract
Cu-Ni-Si alloys are commonly used in lead frame,electrical contacts,connectors and other components.However,the traditional preparation process is complex.Vacuum die casting technology provides a new way to produce high-performance copper alloys with a simpler process.In this paper,a Cu-Ni-Si-Co-Zr alloy was prepared using vacuum die casting and the effects of solution aging(SA)and direct aging(DA)on the microstructures and properties were investigated.The results showed that after the SA treatment(solid solution for 1.5 h at 900℃and aging for 7 h at 500℃),a large number of massive and netted micron-sized Zr-containing phases and nano-sized acicular phases precipitated in the alloy,contributing to a microhardness of(215.2±3.8)HV,tensile strength of(552.3±16)MPa,and conductivity of(41.9±0.2)%IACS.Notably,after the DA treatment(aging for 6 h at 500℃),the alloy grains were refined.The hardness increased to(237.1±4.2)HV,the tensile strength was(632.4±20)MPa,and the conductivity decreased to(33.0±0.3)%IACS.This study discussed the effects of different heat treatment processes on the microstructure and properties of vacuum die casting copper alloys.It provided theoretical guidance and data support for the development of high-performance copper alloys.关键词
Cu-Ni-Si系合金/真空压铸/短流程/直接时效Key words
Cu-Ni-Si alloy/vacuum die casting/simpler process/direct aging分类
矿业与冶金引用本文复制引用
CHANG Xinyi,ZHENG Jingming,SUN Wanting,PAN Shuai,ZHOU Kun,HU Xiaolei,JIA Dongzhou,FU Ying..热处理工艺对真空压铸Cu-Ni-Si-Co-Zr合金组织与性能的影响[J].铜业工程,2025,(6):20-28,9.基金项目
广西科技重大专项项目(2024AA29032) （2024AA29032）
松山湖科技特派员项目(20234441-01KCJ-G)资助 （20234441-01KCJ-G）
