Effects of cold rolling path on recrystallization behavior and mechanical properties of pure copper during annealing  

冷轧路径对纯铜在退火过程中再结晶行为和力学性能的影响

作　　者：Jing CHEN Wen-jie XU Jia-hao YANG Zhi YANG Hong-li SHI Gao-yong LIN Zhu-min LI Xu SHEN Bo JIANG Hui-qun LIU Kai-xuan GUI 陈静;徐文杰;杨家豪;杨志;石红利;林高用;利助民;沈旭;姜波;刘会群;桂凯旋(安徽工程大学材料科学与工程学院,芜湖241000;安徽工程大学高性能有色金属材料安徽省重点实验室,芜湖241000;中南大学材料科学与工程学院,长沙410083;中国科学院等离子体物理研究所,合肥230031;常州大学材料科学与工程学院,常州213164)

机构地区：[1]School of Materials Science and Engineering,Anhui Polytechnic University,Wuhu 241000,China [2]Anhui Key Laboratory of High-Performance Non-ferrous Metal Materials,Anhui Polytechnic University,Wuhu 241000,China [3]School of Materials Science and Engineering,Central South University,Changsha 410083,China [4]Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China [5]School of Materials Science and Engineering,Changzhou University,Changzhou 213164,China

出　　处：《Transactions of Nonferrous Metals Society of China》2024年第10期3233-3250,共18页中国有色金属学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.52201099);the Scientific Research Starting Foundation of Anhui Polytechnic University,China(No.S022021004);Undergraduate Scientific Research Project of Anhui Polytechnic University,China;School Level Scientific Research Project of Anhui Polytechnic University,China(No.Xjky2022028);the Open Research Fund of Anhui Key Laboratory of High-Performance Non-ferrous Metal Materials,China(No.YSJS-2023-1)。

摘　　要：The recrystallization behavior,grain boundary characteristic distribution,and mechanical properties of pure Cu sheets that were subjected to different cold rolling paths,and then annealed at 400°C for 10,30,60,and 420 min,were investigated.Different rolling paths changed the grain boundary orientations of cold-rolled copper,causing recrystallized grains to nucleate and grow in an oriented manner.However,the evolution of the texture indicated that cold-rolled copper with different rolling paths did not show an obvious preferred orientation after annealing.The RD-60 specimen exhibited the smallest grain size(6.6μm).The results indicated that the grain size and low-ΣCSL grain boundaries worked together to provide RD-60 samples with appropriate mechanical properties and high plasticity.The yield strength,ultimate tensile strength,and elongation of RD-60 sample were 81 MPa,230 MPa,and 49%,respectively.These results could provide guidance for tuning the microstructures and properties of pure Cu foils,as well as designing fabrication routes for pure Cu foils through processes such as rolling and drawing.研究了不同冷轧路径的纯铜在400℃退火10、30、60和420 min过程中的再结晶行为、晶界特征分布以及力学性能。不同的轧制路径改变了冷轧铜的晶界取向,导致再结晶晶粒定向成核和长大;而织构演变表明,不同轧制路径的冷轧铜在退火后没有表现出明显的择优取向。RD-60样品的晶粒尺寸最小(6.6μm)。结果表明,在晶粒尺寸和低∑CSL晶界共同作用下,RD-60样品具有较好的力学特性和高塑性,其屈服强度、极限抗拉强度和伸长率分别为81 MPa、230 MPa和49%。这些结果可以为调整纯铜箔的微观结构和性能,以及通过轧制和拉拔等工艺设计为纯铜箔的制造路线提供指导。

关 键 词：rolling path grain boundary characteristic distribution pure copper mechanical properties 

分 类 号：TG335.12[金属学及工艺—金属压力加工] TG146.11[一般工业技术—材料科学与工程] TG156.2[金属学及工艺—金属材料]