Laser Machining and Welding of Amorphous Alloys

摘要

The program utilized laser cutting and welding of metallic glasses under a wide range of experimental conditions. Primary objectives included a study of laser-solid interactions and material removal rates, establishment of conditions for cutting toroidal core geometries, measurement of alloy properties after laser processing, and evaluation of alloys for use in motors and transformers. The technical approach involved laser cutting of metallic glasses using CO2 and Nd:YAG lasers, laser welding using Nd:YAG lasers, metallurgical measurements and refinement of experimental conditions. Principal findings included laser cutting of metallic glasses at high cutting rates while maintaining quality cutting edges with small heat affected zones and little deterioration in material properties. On the other hand, laser welding presented some technical difficulties and resulted in brittle welds with reduced mechanical strength.