高纯铌/无氧铜爆炸焊接复合板界面组织及性能研究  

Interfacial Structure and Mechanical Properties of High-purity Nb/Cu Explosive Welding Composite Plate

作　　者：任军帅 宋健 王若旭[2] 苏艳妮 皇世春 杨自钦 郭学鹏[1] 舒滢[1] REN Junshuai;SONG Jian;WANG Ruoxu;SU Yanni;HUANG Shichun;YANG Ziqin;GUO Xuepeng;SHU Ying(Northwest Institute for Nonferrous Metal Research,Xi'an 710016,China;Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China)

机构地区：[1]西北有色金属研究院,陕西西安710016 [2]中国科学院近代物理研究所,甘肃兰州730000

出　　处：《热加工工艺》2021年第9期45-48,53,共5页Hot Working Technology

摘　　要：为提升射频超导腔性能、降低工程成本,以高纯铌板和无氧铜板为原料,将爆炸焊接方式应用于超导层状复合材料领域,成功制备了新型高纯铌-无氧铜层状复合板,研究了Nb/Cu复合板的结合界面组织和力学性能。结果表明:Nb/Cu结合界面宏观上呈典型的波浪状结合状态,并形成了2~4μm的扩散层,实现了良好的冶金结合。Nb/Cu复合板的抗拉强度为190~210 MPa,伸长率为40%~50%;经弯曲变形后没有分层、开裂等,具有良好的抵抗分层能力;复合板显微硬度分布较为均匀,因加工硬化作用结合面处的硬度略高于基体。In order to improve the performance of RF superconducting cavity and reduce engineering costs,the explosive welding technology was chosen to produce composite plate for RF superconducting cavity with high-purity niobium and copper plates as raw materials,and new Nb/Cu composite plate was prepared successfully.The interfacial microstructure and mechanical properties of the Nb/Cu composite plate were investigated.The results show that the bonding interface of Nb/Cu is wavy morphology,and 2-4μm diffusion layer is formed,which indicates good metallurgical combination.The tensile strength of Nb/Cu composite plate is 190-210 MPa,and the elongation is 40%-50%.The bending test results show that Nb/Cu composite plate possesses excellent resistance to delamination and cracking.The micro-hardness of the composite plate is uniformly distributed,and the micro-hardness of the interface is higher than that of matrix due to work hardening.

关 键 词：高纯铌/无氧铜 爆炸复合 界面组织 力学性能 

分 类 号：TG146.4[一般工业技术—材料科学与工程] TG456.6[金属学及工艺—金属材料]