Titanium-Vanadium Stability Factor
The titanium-vanadium stability factor measures how well vanadium in titanium alloys increases beta stability. It affects the transformation rate during rapid cooling.
Physico-chemical mechanism of action
Vanadium in titanium alloys reduces the growth of beta regions (titanium beta phase) by stabilizing the crystal structure. This slows the transformation from alpha to beta phase during rapid cooling.
Metallurgical relevance & welding risks
Too high a vanadium content can lead to excessive beta stability, which coarsens the microstructure and reduces toughness. Too low a content results in increased susceptibility to beta region formation during rapid cooling.
Workshop practice & procedures
Ensure that the vanadium content in titanium alloys is in the optimal range (typically 0.1% to 0.5%). During rapid cooling, be careful to limit the maximum temperature and apply a controlled cooling method.