Research status analysis of electron beam welding for joining of dissimilar materials

Electron beam welding (EBW) in the field of joining dissimilar materials has been a subject of interest in recent years based on special features of EBW, e.g. high energy density, accurately controllable beam size and location, low residual stress and pollution-free weld. Numerous successful results have been achieved, and some of them have already been exploited in industrial production. Since EBW is a fusion welding method, difficulties associated with metallurgical phenomena still exist. This paper is aimed to have an analysis of the research status of electron beam welding for the joining of dissimilar materials. A summary of the existing problems and solutions during electron beam welding of different type of dissimilar material joint has been conducted and the key points of research in future are also proposed.