Multi-beam electron beam welding (EBW) is a new technique that allows more than two electron beams running simultaneously for welding and it is considered a promising method to reduce welding stress and deformation. In order to reduce the deformation of Ti6Al4V alloy sheets, a novel multi-beam EBW method was proposed in this research, including two additional electron beams to post-heat the weld, besides one main electron beam to melt metals. Experiments were conducted on Ti6Al4V alloy sheets using this multi-beam technique. Results show that compared with the conventional EBW, the multi-beam EBW can improve the welding thermal cycle and effectively reduce the welding deformation by adjusting the position and energy distribution of two additional electron beams.
Fan, J., Zhang, W., Qi, B., & Liu, F. (2017). Influence of Multi-Beam Electron Beam Welding Technique on the Deformation of Ti6Al4V Alloy Sheet. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, 46(9), 2417–2422. https://doi.org/10.1016/s1875-5372(17)30208-4