New shear fiber texture component in pure Mg subjected to strain reversal through high pressure compressive reciprocating shear

Résumé fourni par la source

A new type of shear texture was observed to persist in pure magnesium deformed up to large strains by a new process: High Pressure Compressive Reciprocating Shear (HPCRS). A large von-Mises strain of 33 was imposed through this recently proposed severe plastic deformation process. The new component of shear texture is a fiber, with the c-axis of the crystallites lying in the shear plane. These orientations were theoretically predicted to be unstable under simple shear deformation, so they should be non-existent at large strains. The stability of this fiber despite very large strain deformation is attributed to the initial twinning activity and the unique reciprocating nature of shear strain imposed on the material through HPCRS. Viscoplastic self-consistent polycrystal plasticity simulations could explain the existence of the new shear fiber texture.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.