Dislocations, boundaries and slip systems in cube grains of rolled aluminium

Low-Energy Dislocation Structure (LEDS) character of dislocation boundaries aligned with slip planes in rolled aluminium

“…This conclusion is in full agreement with a previous comparison of predicted and observed dislocation networks in the Type 2 cell structure of tensile deformed aluminium grains with the tensile axis near <100> [40].…”

Atomistic simulations of interaction of edge dislocation with twist grain boundaries in Al-effect of temperature and boundary misorientation

“…The low twist angle between the two neighboring grains led to the formation of a screw dislocation network, where the individual dislocations were arranged orthogonally. Such type of interface structure was also observed by Schober [35] using electron microscopy in (110) [37,36]. It is to be noted that these observations are also in accordance with the dislocation networks observed in (110) [35] and (100) [38] twist GB interface in fcc Au and in (100) interface of other fcc metals like Ni [11,34] and Cu [39,40] as well.…”

Deformation-induced orientation spread in individual bulk grains of an interstitial-free steel

“…The similar alignment was further linked to similarities in the activated slip systems [53] and correlated with changes in the flow stress upon a strain path change [54,55]. It follows that the dislocations gliding on these systems should be those accumulating in the dislocation boundaries, which has also been confirmed [56][57][58]. The subdivision by these dislocation boundaries alone can, however, not explain the presently observed orientation spread as the mean misorientation angle across such boundaries is about 1.3 in 10% deformed interstitialfree steel [59].…”