铜业工程Issue(5)：19-26,8.DOI:10.3969/j.issn.1009-3842.2025.05.003
不同SCR连铸连轧产线铜杆的组织和力学性能研究
Microstructure and Mechanical Properties of Copper Rods from Different SCR Continuous Casting and Rolling Production Lines
摘要
Abstract
The SCR continuous casting and rolling process is a crucial industrial method for producing electrical copper rods.The dif-ferences in the microstructure and mechanical properties of copper rods produced by different production lines result in varying down-stream product types.To investigate the differences in the microstructure and mechanical properties of copper rods from different SCR continuous casting and rolling production lines and to study the underlying mechanisms causing these differences,this work analyzed the mechanical properties of copper rods from two different SCR continuous casting and rolling production lines,SCR1 and SCR2,of a certain enterprise,using room temperature uniaxial tensile and hardness tests.The microstructure of copper rods was characterized us-ing optical microscopy(OM),scanning electron microscopy(SEM),and electron back scatter diffraction(EBSD).Quantitative studies on the differences and intrinsic relationships between the microstructure and mechanical properties of two copper rods were conducted.The results showed that the tensile strength and elongation of SCR1 and SCR2 copper rods were similar(approximately 230 MPa and 42%),while the latter possessed slightly larger grain size and a 38%higher yield strength of 147 MPa.The copper rods from both pro-duction lines exhibited similar grain sizes without an order of magnitude difference,comparable high angle grain boundary ratios,and weak textures,resulting in similar tensile strength and elongation to failure.Both SCR1 and SCR2 copper rods still retained incomplete-ly annealed dislocations,with the latter possessing a higher dislocation density,which contributed to the higher yield strength of the latter.关键词
SCR连铸连轧/铜杆/组织/室温单向拉伸/力学性能Key words
SCR continuous casting and rolling/copper rod/microstructure/room temperature uniaxial tensile test/mechanical property分类
矿业与冶金引用本文复制引用
万涛,吴龙军,甘强,陈飞龙,邹松,陈岩..不同SCR连铸连轧产线铜杆的组织和力学性能研究[J].铜业工程,2025,(5):19-26,8.基金项目
赣鄱俊才支持计划·主要学科学术和技术带头人培养项目(20232BCJ22028)资助 （20232BCJ22028）
