Non-uniform microstructure and texture evolution during equal channel angular extrusion

Modeling transients in the mechanical response of copper due to strain path changes

“…We show in previous work that this flow model agrees well with FE simulations (Li et al, 2005) better than the simple shear model. When combined with VPSC, the resulting texture predictions agree well with separate measurements made by neutron diffraction and OIM in a variety of materials (Li et al, 2005;Beyerlein et al, 2005b). For this work, the Cu polycrystal is represented by 1516 distinct orientations distributed according to an OIM measurement of the initial texture (Li et al, 2004), consisting in a weak fiber about the billet long axis.…”

Analytical modeling of material flow in equal channel angular extrusion (ECAE)

“…F and L given by Eqs. (35) and (30) reduce for this special case to Eqs. (7) and (10) when Φ = 90 • .…”

“…The cos 2 α factor reflects the fact that a time increment associated with the same β decreases as α decreases. See [35] for further discussion.…”

“…(28) and (35) and the relation (5), or integrating strain increments calculated directly using F in Eqs. (28) and (35). For the latter, the relationship between strain E m and deformation gradient F takes on the following general form…”

A multi-scale model for texture development in Zr/Nb nanolayered composites processed by accumulative roll bonding

“…With the DD-CPFE model it is also possible to capture texture gradients between two adjacent Zr/Nb interfaces. Such gradients may not be realized in a bulk texture measurement but can be accessed via spatially resolved techniques, like EBSD and synchrotron [87]. Prior to using such experimental techniques, we first wanted to check whether texture gradients induced by the interface may have been missed by the foregoing measurements.…”