Title: Interfacial reactions during the dissolution of titanium in liquid iron
Authors: Pandelaers, Lieven
Verhaeghe, Frederik
Blanpain, Bart
Wollants, Patrick
Issue Date: 11-Feb-2008
Publisher: Trans Tech
Host Document: Diffusion and Defect Data A, Defect and Diffusion Forum vol:273-276 pages:467-473
Conference: International Conference on Diffusion in Solids and Liquids edition:3 location:Algarve (Portugal) date:04-06 July 2007
Abstract: The interfacial reactions between a solidified Fe shell and Ti were investigated within the
framework of steel alloying. Ti cylinders were immersed into liquid Fe for various durations and
subsequently water-quenched. An Fe shell solidifies around the Ti. At the interface between Fe
and Ti a reaction zone is formed. Initially it consists of a liquid eutectic layer, though in later stages
all stable phases at elevated temperature can be found in the quenched microstructure. The larger
part of this reaction zone is fluid at high temperature and both Ti and Fe dissolve into it. Moreover,
intermetallic compound formation and mixing of Fe and Ti generate extra heat, shortening the time
required for shell melt-back. The reaction zone reaches thicknesses up to 40 % of the initial
sample’s radius and when the shell has completely remolten, a discontinuity in the thickness-time
profile is expected. The exact morphology of the reaction zone at high temperature remains to be
determined: presence of a solid layer of Fe2Ti may impede mixing in the initial stages.
ISSN: 1012-0386
Publication status: published
KU Leuven publication type: IC
Appears in Collections:Department of Materials Engineering - miscellaneous

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