Butt welding of TiZrMoCuBe MGC/TC4 titanium alloy using a pulsed Nd:YAG laser

Abstract

β-Ti dendrite toughened metal glass composite and TC4 titanium alloy were butt welded by a pulsed laser. Microstructures and mechanical properties of the welded joint were specially studied. Results show that microstructure in the fusion zone is uneven, and mainly consists of dendritical β-Ti grains (in nanometre or micron scales) and amorphous alloy background. Special chemical compositions of base materials, shocking effect from laser pulses and large cooling speed during welding directly restrain the development of crystal β-Ti grain in the fusion zone. Hardness in the fusion zone ranges from 500 HV to more than 600 HV. During tensile tests, all the welded joints fracture on TC4 titanium alloy base material side.

Research on the dynamic monitoring system of intelligent cluster-chemical welding equipment

“…It can also be stored in the database to provide reference for subsequent technical research. [4] With the continuous improvement of welding technology in our country, there is more and more technical experience stored in our welding industry. Although there is still a big gap between China and developed countries, the machinery manufacturing industry does not get rid of the labor-intensive management mode, but after entering the era of big data, scientific scholars strengthened the research of welding equipment and welding production process, and introduced the policy concept of online management and stability.…”