铜业工程Issue(5)：52-62,11.DOI:10.3969/j.issn.1009-3842.2025.05.007
Sn和Zr元素对Cu-2Ag合金变形组织与性能的影响
Addition of Sn and Zr on Deformation Microstructure and Properties of Cu-2Ag Alloys
摘要
Abstract
With the continuous miniaturization and high-power trends of electronic devices,the development of copper-based alloys that combine high strength,excellent electrical conductivity,and outstanding thermal stability has become a major research focus in materi-als science.This study systematically investigated the effects of co-adding Sn and Zr on the microstructure,mechanical properties,and electrical conductivity of a Cu-2Ag(wt%)alloy.The results showed that while the addition of Sn alone induced the formation of coarse precipitates during the aging process,the combined addition of Sn and Zr significantly refined the precipitate size and promoted their homogeneous dispersion within the matrix.During rolling deformation,Cu-Ag-Sn alloy exhibited increased twin boundary formation due to local stress concentrations caused by non-uniform precipitate distribution,whereas Cu-Ag-Sn-Zr alloy showed a reduction in twin boundary density and a weakened deformation texture as a result of coordinated and uniform deformation mediated by nanoscale precipitates.After annealing,Cu-Ag-Sn-Zr alloy demonstrated excellent thermal stability,achieving a tensile strength of(377±7.1)MPa,which represented a 34.6%improvement over the Cu-Ag alloy while maintaining an electrical conductivity of 88.4%IACS.This enhancement was primarily attributed to the nanoscale precipitates,which effectively inhibited grain boundary migration and sup-pressed recrystallization.关键词
铜银合金/轧制/退火/织构/显微组织Key words
Cu-Ag alloy/rolling/anneal/texture/microstructure分类
金属材料引用本文复制引用
贾沂霖,王玉,麦永津,王纪均,周坤,付莹..Sn和Zr元素对Cu-2Ag合金变形组织与性能的影响[J].铜业工程,2025,(5):52-62,11.基金项目
广西科技重大专项项目(2024AA29032)资助 （2024AA29032）
