Formulas for calculation of the effect of alloy elements over peritectic transformation and liquidus temperature of steel can be found at http://www.gorni.eng.br/e/Gorni_SFHTHandbook.pdf.
Formulas for calculation of the effect of alloy elements over peritectic transformation and liquidus temperature of steel can be found at http://www.gorni.eng.br/e/Gorni_SFHTHandbook.pdf.
That was a great document which gave me good insight about changing carbon equivalent during the peritectic transformation. However I didn't find anything about effects of alloying elements on the Tl and T(peritectis).