In-situ EBSD study of the active slip systems and lattice rotation behavior of surface grains in aluminum alloy during tensile deformation

Crystallographic orientation and boundary effects on misorientation development in austenitic stainless steel

“…After EBSD analysis, the same samples were used for transmission electron microscopy (TEM) study. An increase in average misorientation during deformation could occur due to lattice distortion (dislocation accumulation) or rigid body rotation [9,10,22]. However rigid body rotation is minimal at the relatively low strains [16,23] considered in this study.…”

“…The local deformation is influenced by crystal structure [1], grain orientation [2][3][4], neighbouring grains and the various boundaries present [5][6][7][8]. Plastic deformation results in both lattice distortion and lattice rotation due to dislocation activity [9][10][11]. Characterisation techniques such as electron microscopy [4,7,12], Electron Backscatter Diffraction (EBSD) [7,12,13], X-ray diffraction (XRD) [14,15] and digital image correlation (DIC) [12] have been extensively used to investigate dislocation activity during deformation and dislocation interactions with boundaries such as grain, phase and other special boundaries.…”

Loading and texture bias on the competitive slip activity for basal and prismatic slip systems in HCP alloys

“…From EBSD data Kernel Average Misorientation (KAM) of grain is calculated. KAM of a grain is used to quantifying the local strain accumulated in a grain due to plastic deformation [10]. In figure 2 average KAM for near basal and near prismatic (101 0 and 21 1 0) oriented grains is plotted as a function of % deformation.KAM increases with deformation for all orientations, however the rate of increase is higher for nearprismatic grains as compared to the near basal grains.…”

In-situ EBSD study of deformation behavior of Al–Si–Cu alloys during tensile testing

“…When the cast materials are subjected to mechanical loading, the crack is usually initiated at the defects; however, Fe-rich intermetallics and Si particles assist in further crack propagation. From the previous studies on Al-Si alloys, it has been established that the tensile damage occurs due to cracking of eutectic Si and Fe-rich intermetallics when loading occurs perpendicular to the plate shaped particles [22][23][24][25]. Large and elongated particles show a greater tendency for cracking.…”