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采用扫描电镜(SEM)与电子探针(EPMA)研究了Ti(合金)/Cu/不锈钢(S.S)爆炸复合界面层的电子显微组织特征,分析了界面层成分再分布规律及化合物的形成。结果表明,CU/S.S界面层具有明显的爆炸焊接波状组织,波长约200μm。Ti/Cu界面层呈锯齿波状,比较细小,波长仅30～40μm。在中间过渡层Cu,观察到大量的应力应变流线,显示爆炸复合过程冲击波流动特征。SEM照片及EPMA合析结果表明:在高温、高压、快速爆炸焊接过程中存在着复杂的冶金物理反应,形成多种反应产物。界面层除发生塑性形变外,还存在相互扩散,熔化和回复再结晶。
The electron microscopic features of Ti (alloy) / Cu / stainless steel (S.S.) explosive composite interface were studied by SEM and EPMA. The redistribution of interfacial layer composition and the formation of the compound were analyzed. The results show that the CU / S.S interfacial layer has obvious explosive welding wavy structure with a wavelength of about 200μm. Ti / Cu interface layer was sawtooth wavy, relatively small, the wavelength is only 30 ~ 40μm. In the intermediate transitional layer Cu, a large number of stress-strain flow lines were observed, showing the characteristics of the shock wave in the explosive recombination process. The SEM photographs and EPMA results show that there are complex metallurgical reactions in the process of high temperature, high pressure and rapid explosion welding, forming a variety of reaction products. In addition to plastic deformation of the interface layer, there are mutual diffusion, melting and recovery recrystallization.