Impact of mechanical anisotropy on flat-rolled wires geometry

Thomas Massé (1) , Yvan Chastel (1) , Lionel Fourment (1) , Pierre Montmitonnet (1) , Christian Bobadilla (2) , Nicolas Persem (2) , Sylvain Foissey (3)

1 CEMEF - Centre de Mise en Forme des Matériaux
2 ArcelorMittal Gandrange
3 ArcelorMittal Wire France

A precise final geometry of flat-rolled wires is required in view of their industrial applications. However, comparison between experimental and computed cross-sections shows a gap of 10%. This difference might originate in the anisotropy introduced by wire drawing. Coefficients of an anisotropic constitutive model (Hill 48) have been identified from transverse compression tests. Then Lam3®, a finite element software, has been used to simulate rolling passes. The anisotropic law previously established significantly improves the estimation of the final width: yet the underestimation of the experimental width is 5% instead of 10%. Possible ways for further improvement are discussed.

Mots clés: High carbon steel; Wire drawing; Rolling; Anisotropy; Lateral spread; Hill criterion; Friction

Domaines: Matériaux

Thomas Massé, Yvan Chastel, Lionel Fourment, Pierre Montmitonnet, Christian Bobadilla, et al.. Impact of mechanical anisotropy on flat-rolled wires geometry. 12th ESAFORM Conference on Material Forming, Apr 2009, Enschede, Netherlands. pp.Pages 363-366, ⟨10.1007/s12289-009-0444-6⟩. ⟨hal-00509436⟩