A finite element model of deformation twinning in zirconium

Study of internal strain evolution in Zircaloy-2 using polycrystalline models: Comparison between a rate-dependent and a rate-independent formulation

“…The values of the initial critical shear stresses s 0 are consistent with previously published polycrystal data [35,36,34,37]. For the EVPSC model, the best results are obtained when the critical volume fraction f c that needs to be reached to create a child grain is equal to 2%, which is in good agreement with results obtained from a finite-element study of twin initiation [38]. In addition, to account for the initial stresses induced by fabrication and processing steps, a thermal loading is applied to the polycrystal before each mechanical loading.…”

An integrated full-field model of concurrent plastic deformation and microstructure evolution: Application to 3D simulation of dynamic recrystallization in polycrystalline copper

“…For instance, frameworks (Thamburaja and Anand, 2001;Turteltaub and Suiker, 2005;Lan et al, 2005;Manchiraju and Anderson, 2010) have been developed to incorporate martensitic transformations as the flow rules. Mechanical twinning, which is of great importance to the plasticity of many BCC metals as well as FCC metals with low SFE, has also been incorporated into FE-CP models (Kalidindi, 1998;Staroselsky and Anand, 1998;Salem et al, 2005;Steinmetz et al, 2013;Zhang et al, 2008). Atomistically-informed dislocation-based models have also been developed recently and applied to single crystal (Cereceda et al, 2015).…”

Study of 3-D stress development in parent and twin pairs of a hexagonal close-packed polycrystal: Part I – in-situ three-dimensional synchrotron X-ray diffraction measurement

“…Studies of the interaction between twin and parent pairs have indicated that neighboring grains can play a significant role in stress development inside the twin or even in the thickening of twins [10,14,15,20]. Hence, a thorough understanding of deformation twinning requires a high population of twinned grains, where each grain experiences a different neighboring arrangement.…”