TENSILE TWINNING: BANE OR BOON FOR FRACTURE OF MAGNESIUM ALLOYS [Plenary Lecture]
R. NarasimhanGrand Ballroom E
In this paper, an overview of recent experiments and some simulations aimed at understanding the
fracture behavior of magnesium is presented. The effects of crystallographic orientation, notch acuity,
temperature and strain rate are examined. The results show that tensile twins critically influence the
fracture mechanism operative near a crack or notch tip. On the other hand, they contribute significantly to
plastic dissipation and toughening. Also, they impart hardening which can retard micro-void growth.