爆炸焊接TA1/Al复合管的界面及性能研究

采用爆炸焊接工艺对TA1管材及Al管进行了爆炸复合。利用SEM、XRD对复合管结合区形貌及相组成进行了研究;测试了复合管的结合强度及过渡区的显微硬度,并进行了轴向压缩、径向压扁试验。结果表明:直线状及波状界面同时存在于过渡区;过渡区域出现了明显的元素扩散现象;界面结合强度不低于纯铝剪切强度;轴向压缩、径向压扁后的复合管试样均未出现分层,说明TA1/Al复合管坯界面结合性能优异,可以承受大的塑性变形。

Interface and Properties of Explosive Welded TA1/Al Clad Tube

Aluminum tube and TA1 tube were cladded by explosive welding. The morphology and phases of the bonding interface were studied by SEM and XRD, respectively. The bonding strength and the microhardness distribution of the transition region were measured. The axial compression test and the radial flattening test were also carried out. The results indicate that the linear and the wavy bonding interface coexist. Meanwhile, obvious element diffusion occurs in the interfacial zone. In addition, the bonding strength can get no less than the shear strength of Al. No separation happens after the compression test and flattening test, indicating that the clad tube has excellent bonding properties and can endure large plastic deformation.