High voltage electron beam frame process of TC4-DT material is studied. High voltage electron beam welding technology is used to realize the hot forming process of refractory metal with complex structure and large thickness

and the process

microstructure

mechanical properties and microstructure are analyzed systematically. The experimental results show that the formation of the electron beam is relatively flat

the shape is narrow

the tensile and impact strength are higher

and the tensile strength is stronger than that of the base metal

but the impact toughness is decreased. Meanwhile

the weld joint microstructure of lamellar structure has no obvious boundaries

which ensure the continuity of weld microstructure

and grain refinement

staggered.