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Synopsis
The effect of vanadium, in the range 5 to 1000 ppm, on the microstructure and properties of manual metal arc welds containing 0.6 to 1.8 % Mn has been investigated. It was found that vanadium increased the acicularity of as‐deposited metal and modified the grain size and the microphases in reheated regions. The hardness of the weldments increased and the tensile properties were defined by equations of the form:
σ =a+b.Mn+c.V‐d.V2
In the as‐welded condition vanadium was found, in some instances, to be marginally beneficial for notch toughness whereas after stress‐relieving the element had a progressively deleterious effect at all manganese levels. On balance, it is concluded, for the associated titanium content, that up to 200 ppm V can be tolerated without undue concern.