Etude de la texture cristallographique de fils d'acier perlitiques en fonction des conditions de tréfilage : influence sur les propriétés mécaniques

Abstract : The crystallographic texture of the wires evolves during the process as the strenght of the wire ; this paraameter allows us to know the local deformation in the wire and helps us in the knowledge of the drawing. Texture experiments and mechanical tests on wire picked up at different steps of the industrial drawing process show that there is an heterogeneity of the deformation during the drawing ; this heterogeneity is studied during the deformation of the wire and a limit of drawability can be proposed from the texture indexes of the wire. Laboratory and industrial experiments on the friction between the wire and the dies show the importance of the lubrication on the homogeneity of the deformation. Patenting conditions are studied to improve the drawability. During the drawing, two kinds of texture are observed : a fiber texture <110> and a circular texture <110> (110). Experiments according to the dies angles show their influence on the circular texture and on the torsional behaviour of the wires. Some simulations of the texture evolution are made with the use of the Taylor model
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Abdellatif Abdellaoui. Etude de la texture cristallographique de fils d'acier perlitiques en fonction des conditions de tréfilage : influence sur les propriétés mécaniques. Autre. Université Paul Verlaine - Metz, 1995. Français. ⟨NNT : 1995METZ043S⟩. ⟨tel-01776851⟩

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