有色金属科学与工程2026，Vol.17Issue(2)：258-266,309,10.DOI:10.13264/j.cnki.ysjskx.2026.02.010
退火温度对TU2无氧铜力学性能及磨损性能的影响规律
Effect of annealing temperatures on the mechanical and wear properties of TU2 oxygen-free copper
摘要
Abstract
In this study,the effects of different annealing temperatures(200,250,300 and 350℃)on the microstructure,mechanical properties and friction and wear properties of TU2 oxygen-free copper were analyzed using OM,SEM/EDS,3D/CLM,tensile testing machine,and friction and wear testing machine.The results show that with an increase in annealing temperature,the grain sizes of copper alloy gradually increased,and the number of annealing twins increased;the wear resistance exhibited a trend of increasing first and then decreasing.TU2 oxygen-free copper exhibited the highest yield strength(295.3 MPa),tensile strength(303 MPa),and the Vickers hardness(94.7 HV)at an annealing temperature of 200℃,demonstrating a superior balance between strength and plasticity.This was primarily attributed to the inhibition of dislocation movement by fine-grain strengthening,dislocation strengthening,and the presence of annealing twin boundaries.Regarding wear resistance,the sample annealed at 250℃exhibited the best wear resistance,with a wear volume of only 30.73×10-3 mm3/(N·m),attributed to the retention of an appropriately work-hardened microstructure.Although a stable oxide film formed on the surface of the sample annealed at 350℃(reducing the coefficient of friction to 0.414),its wear volume increased significantly compared to the 250℃annealed sample.This degradation in performance was mainly due to the insufficient load-bearing capacity of the matrix,which weakened its resistance to ploughing and plastic deformation.关键词
TU2无氧铜/退火温度/显微组织演变/力学性能/摩擦磨损机制Key words
TU2 oxygen-free copper/annealing temperature/microstructure evolution/mechanical property/friction and wear mechanism分类
矿业与冶金引用本文复制引用
张源,张旗升,林凯,宋玉斌,张孝忠,应如云,李泽明..退火温度对TU2无氧铜力学性能及磨损性能的影响规律[J].有色金属科学与工程,2026,17(2):258-266,309,10.基金项目
河北省自然科学基金资助项目(E2024209059) （E2024209059）
