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A Three Dimensional Model to Characterize the Centerline Segregation in CC Slabs
Author(s) -
Brune Tobias,
Kortzak Katharina,
Senk Dieter,
Reuther Nils,
Schäperkötter Markus
Publication year - 2015
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201400015
Subject(s) - slab , continuous casting , shrinkage , electron microprobe , materials science , casting , mechanics , flow (mathematics) , melt flow index , core (optical fiber) , composite material , metallurgy , structural engineering , physics , engineering , polymer , copolymer
In this investigation the formation of centerline segregation and shrinkage holes in the final stages of solidification during the continuous casting process of slabs is described. Therefore experimental and theoretical investigations of the melt behavior during the solidification are carried out. Based on these results, a model is presented to explain the formation of V‐shaped segregation and core porosities caused by the restricted flow of melt through the mushy zone in slabs. The theoretical explanation is manifested by various observation, calculations and analyses by electron microprobe mappings. The main results are that V‐segregation forms in quasi periodical frequency in longitudinal direction within continuous cast slabs. The areas of formation seem to be independent, like little billets lying side by side in one slab. Consequential a three dimensional model about the behavior of the liquid melt in the final stages of solidification is designed.