Contribution à l'étude expérimentale des microségrégations dans les aciers présentant une réaction péritectique

Abstract : This PhD work is an experimental part of a global R&D project witech aim to study the microsegregation in peritectic steels. The experimental investigations were made by a Directional Solidification device (DS), Quenched Directional Solidification (QDS) and from parts of industrials ingots. The alloys selected were taken from the Fe-C-Ni and Fe-C-Cr systems. On the solidified steels we investigate the effect of the chemical composition and the first solid (ferrite/austenite) on the microsegregation. The next step was the characterization of the microsegregation during the solidification with and without a peritectic reaction. Afterwards we study the effects of the length of the structure, the microstructure (dendritic/cellular) and the we have do a comparison between the experimental results and those from the numerical simulation
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Abdelaziz Addad. Contribution à l'étude expérimentale des microségrégations dans les aciers présentant une réaction péritectique. Autre. Institut National Polytechnique de Lorraine, 2007. Français. ⟨NNT : 2007INPL038N⟩. ⟨tel-01752895⟩

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