Measuring and Modeling the Effects of Mechanical Twinning on the Behavior of Magnesium Alloys

The effects of twins on the large strain deformation and fracture of hexagonal close packed crystalline materials

“…Therefore, the maximum normal component of the traction on cleavage planes is monitored and compared with a critical fracture stress σ frac to determine failure. The failure criterion is then given by (7) where .…”

“…Twinning is a dominant deformation mechanism in h.c.p. materials, and it can significantly affect behavior, such as fracture, strength, and ductility, at different scales [5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Kaschner and Tome [19] have proposed a dislocation barrier model, where tensile and compressive twins impede the propagation of dislocations and other twins in zirconium, and they concluded that twins play a dominant role in affecting the overall hardening of h.c.p.…”