钛/铝爆炸焊接复合板界面表征及冶金连接机制  

Interface characterization and metallurgical bonding mechanism of Ti/Al explosively welded composite plates

作　　者：李岩[1,2] 陈闯 李艳彪 刘翠荣 赵瑞[2] 周印梅 任金锁 LI Yan;CHEN Chuang;LI Yanbiao;LIU Cuirong;ZHAO Rui;ZHOU Yinmei;REN Jinsuo(Academy of Materials Science and Engineering,Taiyuan Unicersity of Science and Technology,Taiyuan 030024,China;Shanxi Yangmei Chemical Machinery(Group)Co.,Ltd.,Taiyuan 030032,China)

机构地区：[1]太原科技大学材料科学与工程学院,太原030024 [2]山西阳煤化工机械(集团)有限公司,太原030032

出　　处：《压力容器》2021年第7期9-16,共8页Pressure Vessel Technology

基　　金：国家重点研发计划“高品质金属复合板高效制备原理与技术基础”(2018YFA0707300);山西省高等学校科技创新项目(2019L0615);山西省青年科学基金(201901D211291);太原科技大学博士启动资金(20182041,20192011)。

摘　　要：钛/铝爆炸焊接界面是钛/铝层状复合材料成分、组织、性能的过渡区,决定着钛铝层状复合材料使役可靠性,爆炸焊接界面微观组织与结合机理有待深入研究。借助先进的材料分析手段,表征钛/铝爆炸焊接结合区微观特征,探讨爆炸焊接冶金连接机制。研究表明,沿着爆炸复合方向,钛铝结合界面由平直状向波状转变,波状结合处存在TiAl_(3)金属间化合物,爆炸焊接界面存在明显的晶粒细化,界面处钛铝两种元素扩散厚度为8μm。试验现象与爆炸焊接理论相结合,深入分析了钛/铝爆炸焊接界面微观特征形成的机理,揭示了钛/铝爆炸焊接具有压力焊、熔化焊和扩散焊的典型特征。The Ti/Al explosively welded interface is the transition zone of composition,microstructure and properties of Ti/Al layered composite material,which determines the service reliability of Ti/Al layered composite material.The microstructure and bonding mechanisms of the explosively welded interface need to be further studied.With the help of advanced material analysis methods,the microscopic characteristics of Ti/Al layered composite material near the bonding zone were characterized,and the metallurgical bonding mechanisms of explosive welding was investigated.The results show that the Ti/Al bonding interface was transformed from flat to wavy along the direction of explosive bonding,and there was TiAl_(3) intermetallic compounds in the wavy joint.There was obvious grain refinement at the explosively welded interface.The Ti/Al diffusion thickness at the interface was 8μm.In combination with the experimental phenomena and the theories of explosive welding,the evolution mechanisms of microstructure of Ti/Al explosively welded interface were analyzed.It was revealed that Ti/Al explosive welding has typical characteristics of pressure welding,fusion welding and diffusion welding.

关 键 词：钛-铝复合板 爆炸焊接 微观特征 冶金结合 

分 类 号：TH142[一般工业技术—材料科学与工程] TG457.1[机械工程—机械制造及自动化]