多层非晶薄带爆炸焊接实验设计

 非晶材料的高强度及其对温度的敏感性，导致爆炸复合制备非晶块体时下限较大而上限较小，使得焊接窗口较窄。通过对非晶薄带涂铜以降低表面硬度，分析表明其不仅能降低下限，同时使高速撞击产生的热量主要集中在涂层上，减小非晶薄带的受热影响区域；再利用损伤力学的思想，在装置设计时采用增设缺陷的方法，以削弱到达焊接界面的反射拉伸波强度，提高焊接上限；降低的下限和提高的上限能使焊接窗口有效地扩大，从而使爆炸复合制备非晶块体易于实现。

The Experiment Design for Explosive Welding of Multilayer Amorphous Foils

Because of the high strength and temperature sensitivity of the metal glass,its lower limit is higher and upper limit is lower than that of crystal metal when bulk metal glass was prepared by amorphous foils explosive welding.In this paper,the surface of foils was coated by copper to decrease surface hardness.Results showed that this method can reduce the lower limit,concentrate the energy of plastic collision mainly on coating layer and remarkably minimize foils heat effect zone.Besides,during the experime...