Experimental Investigations on Electron Beam Welding of SAE 15B41 Steel

Electron beam welding (EBW) has been developed for many years and is being increasingly implemented in various industrial applications. Since EBW is a fusion-welding process, metallurgical phenomena associated with fusion still exist and cause difficulties. However, these are often minor compared to those in conventional arc welding. The aim of this paper is to find out the influence of electron beam welding upon the mechanical properties and microstructure of SAE 15B41H. Plates with 25 mm thickness have been butt welded with electron beam without using filler material. The mechanical properties and microstructure in the area of base metal, heat affected zone, and fusion zone was studied. The microstructure in the fusion zone consists of martensite, ferrite and carbides. The microhardness in the fusion zone is on the higher side compared to base metal. The U.T.S and Y.S. of EBW is higher and % elongation is lower as compare to base metal.