Effect of temper rolling on the mechanical behaviour of thin steel sheets under monotonous and reverse simple shear tests
Résumé
Temper rolling is performed on ferritic steel thin sheets after cold rolling and annealing, in order to increase the material strength and to obtain the correct roughness and a good flatness. However, depending on the thickness reduction and on the material composition, this operation may induce specific strain-path changes effects during subsequent forming processes. This paper focuses on the analysis of the hardening behaviour during simple shear tests. The results are discussed in relation with the material compositions, the initial anisotropy and the macroscopic strain heterogeneities.