| Abstract: | Non-electric welding, which combines the advantages of traditional welding and Self-propagating Hightemperature Synthesis (SHS), is a newly developed technology because of its simple process and no energy supplement during welding. In this paper, two pieces of 45 steel sheets were welded by Non-electric welding, and the properties of joints were studied. The microstructure and mechanical properties were investigated by SEM, EDAX, hardness tester and tensile tester.The interfaces of the joints and matrix show excellent metallurgical bonding, and the elements of joints have diffused into substrate. Welded joints have high mechanical properties. The bonding strength can reach 348 MPa, and the impact toughness is 44 J/cm2. Non-electric welding technology also can weld non-ferrous, and this technology especially suited to be used at the emergent maintenance of field. |
