Ar-O_2,Ar-CO_2およびCO_2-O_2雰囲気における鋼溶接金属の機械的性質について : ガス・メタル・アーク溶接における鋼溶接金属の機械的性質について(第1報)

概要

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In an oxidizing gas welding atmosphere of Ar-O_2,Ar-CO_2 or CO_2-O_2 gas mixture, mechanical properties of steel weld metal such as ultimate tensile strength and Charpy impact property have been investigated, using a popular Fe-Si-Mn electrode wire (YGW 12) and rolled steel for welded structure (SM 400B). As an addition of oxygen to argon-based mixture, both the tensile strength and toughness tend to decrease. As an addition of carbon-dioxide to argon-based mixture, the tensile strength decreases and then improves, and impact property reveals complex behavior. As an addition of oxygen to carbon-dioxide-based mixture, changes in atmospheric gas composition have a minor effect on the mechanical properties of steel weld metal.
社団法人溶接学会の論文
1992-08-05