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The effect of melt composition on solidification cracking of steel, with particular reference to continuous casting

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Abstract

An analysis is presented describing the microsegregation of phosphorus in steel, intended to be representative of the behavior of the tramp elements associated with solidification cracking (hot tearing). The expected effect of carbon content is incorporated into the model and the rationale may be extended to encompass other addition elements influencing the preferential freezing of ferritic or austenitic phases. The treatment employs partition coefficients and diffusivity data from the literature and is based on a new back-diffusion model. This approach allows the cracking susceptibility criterion suggested by Clyne and Davies to be applied and leads to predictions concerning the effect of carbon level which are in broad agreement with experimental data.

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Clyne, T.W., Wolf, M. & Kurz, W. The effect of melt composition on solidification cracking of steel, with particular reference to continuous casting. Metall Trans B 13, 259–266 (1982). https://doi.org/10.1007/BF02664583

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