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Etude expérimentale de la torsion directe et inverse de fils fins d'acier

Abstract : Perlitic steel wires are the aim of many studies because of their interesting mechanical properties. During cable manufacturing, wires are subjected to torsion loading. So, knowing their microstructural behaviour has driven to a study of their cristallographic texture evlution. Lattice rotations observed during the texture analysis have been compared with grain rotations. Moreover, we made some experiments on cementite texture by synchrotron X raydiffraction. To complete these results, some quantitative phase analysis were realised by Mössbauer spectroscopy to determine if cementite dissolve during torsion. That has been demnstrated. Some works on low carbon steels have succeded to pearlitic steeel studies to evaluate influence of cementite on ferrite texture evolutions. It has been showed that cementite did not influence ferrite texture evolution during wire torsion. A strain localization phenomenon has been studied in reverse torsion. In a macroscopic view, we characterized the morphology and the local texture of this phenomenon
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Submitted on : Thursday, March 29, 2018 - 11:56:30 AM
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  • HAL Id : tel-01748974, version 1



Benoît Forfert. Etude expérimentale de la torsion directe et inverse de fils fins d'acier. Autre [cond-mat.other]. Université Paul Verlaine - Metz, 2007. Français. ⟨NNT : 2007METZ011S⟩. ⟨tel-01748974⟩



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