Welding Journal · 1995 · 45 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsMetallic MaterialsMetallurgyAlloysArc WeldingMetalsMetalworking TechnologySteel MaterialsSteel StructuresFerritic SteelsMetallurgical MicrostructureMicrostructure Evolution In WeldsShielded Metal Arc WeldingWeld Metal MicrostructureWeld MicrostructureWeldability Of AlloysWelding Metallurgy
The combined effect of Al and Ti, in the range 5 to 500 ppm, on the microstructure and properties of C-Mn shielded metal arc welds has been studied. It was found that Ti, in contrast to Al, dramatically enhanced the formation of acicular ferrite and improved notch toughness. A strong interactive effect was encountered, with Al at low concentrations tending to diminish the influence of Ti. Unless a critical balance is achieved, with regard to oxygen content, it is concluded that Ti be optimized at 30 to 40 ppm and that Al be kept as low as possible.