Fe-based nanocrystalline alloys have the characteristics of low power consumption, corrosion resistance and good magnetic stability, while pure Al is characterized by good electrical conductivity, high reflectivity and non-magnetism. To combine the respective performance advantages of the two materials, the welding of Fe-based nanocrystalline alloy foil and Al foil was realized by laser impact spot welding. In addition, the microstructure and mechanical properties of welded joints with different standoff distance were observed and tested. The results show that with the increase in standoff distance, the plastic deformation of the flyer surface will be more serious. When the standoff distance increases gradually (0.1 mm–0.2 mm–0.3 mm), the welding interface will transit from straight interface to wavy interface and finally to wavy interface with local melting zone. The maximum tensile force of the welded sample will increase with the increase in the thickness of the flyer.

Fe基纳米晶合金具有低功耗，耐腐蚀和良好的磁稳定性的特点，而纯Al具有良好的导电性，高反射率和无磁性的特征。结合两种材料各自的性能优势，通过激光冲击点焊实现了铁基纳米晶合金箔和铝箔的焊接。此外，观察和测试了不同支座距离的焊接接头的组织和力学性能。结果表明，随着对峙距离的增加，飞轮表面的塑性变形将更加严重。当支撑距离逐渐增加（0.1 mm–0.2 mm–0.3 mm）时，焊接界面将从直线界面过渡到波浪界面，最后过渡到具有局部熔化区的波浪界面。焊接样品的最大拉力将随着翼片厚度的增加而增加。