水下爆炸焊接和压实

回顾了水下爆炸在军事海战和经济建设方面的应用，并且探索了水下爆炸在工业方面的发展。结合水下冲击波独特的性能，提出了水下爆炸焊接和水下冲击波压实粉末混合物2种加工方法。焊接试样显微组织中典型的波状界面表明水下冲击波对于脆性和薄片材料具有很好的焊接效果。粉末混合物在水下冲击波加载作用下能形成致密体。利用水下冲击波，在纯铜表面制备出了性能优良的弥散强化涂层。涂层内部弥散颗粒分布均匀，高硬度显示了优良的机械性能。

Underwater explosive welding and compaction

The applications of underwater explosion in military and economic development were reviewed and its potential application in industry was explored. Based on the unique properties of underwater shock waves, the underwater explosive welding and underwater explosive compaction were advanced. The characteristic wavy morphology observed in the scanning electron microscope image of the welded sample indicates that the underwater explosive welding can be an alternative bonding method for materials with thin thickness and low formability and the corresponding suitable welding parameters can be determined. The pattern of the interfacial oscillations is an indication of the bonding strength. Powder mixtures could be densified under the action of underwater shock wave and the dispersion strengthened coating on pure copper surface was prepared by using underwater explosive welding. Micro-structural characteristics display that the coating layer has a uniform and fine-grained composite structure. And the measured high hardness shows that the coating layer has sound mechanical properties.