Banks, K.M. (Kevin)Tuling, AlisonMintz, Barrie2012-01-182012-01-182011-10Banks, KM, Tuling, A & Mintz, B 2011, 'The influence of N on hot ductility of V-, Nb-, and Nb-Ti- containing steels using improved thermal simulation of continuous casting', Journal of the South African Institute of Mining and Metallurgy, vol. 111, no. 10, 711-716.0038-223Xhttp://hdl.handle.net/2263/17818The hot ductility of in situ melted tensile specimens of microalloyed steels having C contents in the range 0.12–0.17% (mass %) have been examined over the 700–1000°C temperature range. An improved testing method for simulating the continuous casting process was used, which takes into account both primary and secondary cooling conditions. Increasing the N content to electric arc furnace levels (0.01% N) was found to cause a serious deterioration in ductility. V-N steel gave better ductility than Nbcontaining steels due to less precipitation. From a cracking perspective, low- N steels are generally recommended but, when not feasible, a combination of Nb and V gives even better ductility. However, to be sure of avoiding transverse cracking in higher N steels a small addition of Ti is required. This resulted in a decrease in the fraction of fine particles and in accord with this better ductility. Transverse cracking of industrial slabs was then avoided.en© The Southern African Institute of Mining and MetallurgyHot ductilitySteelTi additionsSteel -- DuctilitySteel alloys -- DuctilityContinuous castingSteel alloys -- CrackingSteel -- CrackingSteel -- Heat treatmentSteel alloys -- Heat treatmentTitaniumArticle