RT Journal Article
ID 11af3cf42f122829
A1 Beyerlein, Irene J.
A1 McCabe, R. J. 
A1 Tome, C. N. 
T1 STOCHASTIC PROCESSES OF {1012} DEFORMATION TWINNING IN HEXAGONAL CLOSE-PACKED POLYCRYSTALLINE ZIRCONIUM AND MAGNESIUM
JF International Journal for Multiscale Computational Engineering
JO JMC
YR 2011
FD 2011-06-30
VO 9
IS 4
SP 459
OP 480
K1 hcp
K1 statistics
K1 probability
K1 twinning
K1 magnesium
K1 zirconium
K1 EBSD
AB Deformation twinning is an important mechanism for metals with hexagonal close-packed (hcp) crystal structures such     as titanium, magnesium, beryllium, and zirconium, as well as metals with other low-symmetry crystal structures. This     article presents a multiscale constitutive model for the plastic deformation of hcp polycrystalline metals that is built     upon the viscoplastic self-consistent (VPSC) polycrystal scheme. This framework includes a novel probabilistic model     for predicting when, where, and which variants nucleate, a dislocation density model for crystallographic slip, and     a micromechanical model for twin lamella thickening and twin reorientation. Length scales of an individual slip or     twinning system and the polycrystalline aggregate are interactively connected. Here, this constitutive model is applied     to high-purity magnesium (Mg) and zirconium (Zr) deformed under loading conditions where twinning is intense.     Correlations are made between the formation of deformation twins, bulk stress-strain behavior and texture development,     and individual grain properties such as size and crystallographic orientation. 
PB Begell House
LK https://www.dl.begellhouse.com/journals/61fd1b191cf7e96f,2c2262e958d8b1f7,11af3cf42f122829.html