Friction Welding of Cr-Mo Steel and Carbon Steel

概要

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The influence of the heat treatment of base metals prior to welding and the heat treatment of the welded joint on mechanical properties, microstructure and torque has been studied using Cr-Mo steel (SCM 3) and carbon steel (S45 C) as the base metals. The main results are as follows- : (1) Fracture in the tensile test always occurs in the base carbon steel, whether the heat treatment is applied to the base metals or to the welded joint. In both the bending test and Charpy test, the heat treated joint has remarkably better properties than the joint made between heat treated base metals. (2) The heat treatment of base metals prior to welding has little influence on the structure at the weld. Either it does not exert any influence on the torque history during welding. (3) The optimum heat treatment process for sound welds is 850℃ oil quench -600℃ tempering after welding.
1979-04-01