Dislocation boundary formation in a cold-rolled cube-oriented Al single crystal

Wert, J. A.; Liu, Q.; Hansen, Niels

doi:10.1016/s1359-6454(96)00348-5

Cited by 107 publications

(62 citation statements)

References 9 publications

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“…The cause of this banding has been related to modifications of the slip systems due to the depth and pattern of friction forces, e.g. at the roll-sample-interface in rolling or in channel die, e.g., (Wonsiewicz andChin 1970, Lee, Duggan andSmallman 1993;Wert, Liu and Hansen 1997;Liu and Hansen 1998), as well as to the accommodation of grip ends in tension ( e.g., kink bands (Calm 195 1;Honeycomb 1951;Calnan 1952)) or the platens in compression (Hughes and Godfrey 1998). In all cases what makes these bands distinguishable optically is not a sharp pair of boundaries defining the edges, but rather the differences in local orientation as well as differences in the morphology of the dislocation structures within them.…”

Section: 1mentioning

confidence: 99%

Deformation microstructures and selected examples of their recrystallization

Hughes

2001

Surface & Interface Analysis

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The elements that are needed to describe a deformation structure—grains, grain boundaries, macroscale banding within crystals, cell blocks, geometrically necessary boundaries and incidental dislocation boundaries (cell boundaries)—are presented and described for fcc metals and alloys of medium to high stacking fault energy. Pertinent to this quantitative description are the local orientations, structural morphology, different boundary misorientations and spacings as a function of strain and deformation conditions. Three specific examples are given in which particular aspects of the deformation structure are shown to direct the recrystallization behavior. Copyright © 2001 John Wiley & Sons, Ltd; first published by Risø National Laboratory.

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Section: 1mentioning

confidence: 99%

Deformation microstructures and selected examples of their recrystallization

Hughes

2001

Surface & Interface Analysis

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“…2,3) The electron backscatter diffraction (EBSD) technique has been employed in determining orientation distribution in, not only polycrystals, [4][5][6][7][8] but also single crystals. [9][10][11][12][13][14][15][16][17][18][19][20] The EBSD technique has the advantage that it enables precise and automatic measurement of many crystal orientations over a large area. Wert et al 18) have performed an EBSD analysis to determine active slip systems in aluminum single-crystals deformed in tension along [110].…”

Section: Introductionmentioning

confidence: 99%

The Effect of a Grain Boundary on Deformation in an Aluminum Bicrystal with a Common Tensile Axis of [100]

Kashihara

Wert²

2006

Mater. Trans.

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The effect of a grain boundary on deformation has been examined using an aluminum bicrystal specimen composed of crystals having a common tensile axis of [100] by the measurement of orientation change with the electron backscatter diffraction technique. After deformation to a strain of 20%, the crystal rotation axis (CRA) map, which provides the orientation distribution of crystal rotation axes relative to the initial crystal orientations, reveals areas affected by the grain boundary. The thickness of the affected zone was 100 mm in one crystal and 150 mm in the other. In both crystals, the crystal rotation axis relative to the initial crystal orientation differed between the affected zone and the crystal interior. In the crystal interior, two slip systems showed a higher activity than the other slip systems, whereas in the affected zone, three or four slip systems were more active than the other slip systems. The CRA map showed that the width and shape of the affected zones across the grain boundary were not symmetrical with respect to the grain boundary.

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“…The calculation of the lattice rotation was based on the method proposed by Wert et al [52]. In all maps, positive values mean anti-clockwise lattice rotations, while negative angles mean clockwise rotations.…”

Section: Lattice Rotation and Slip Trace Along The Tangential Directionmentioning

confidence: 99%

Study of Anisotropic Plastic Behavior in High Pressure Torsion of Aluminum Single Crystal by Crystal Plasticity Finite Element Method

et al. 2017

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Abstract:In this study, a crystal plasticity finite element method (CPFEM) model has been developed to investigate the anisotropic plastic behavior of (001) aluminum single crystal during high-pressure torsion (HPT). The distributions of equivalent plastic strain and Mises stress recorded on the sample surface are presented. The directional variations of plastic strain and Mises stress with the development of four-fold symmetry pattern are observed along the sample circumference. The crystallographic orientation evolution along the tangential direction is studied, and the corresponding lattice rotation and slip trace are predicted, respectively. The plastic anisotropy mechanism is discussed in detail based on the theory of crystal plasticity. The simulation results reveal that the differences in slip systems activation (dominant slip and multiple slips) are responsible for the anisotropic plastic deformation in HPT.

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Dislocation boundary formation in a cold-rolled cube-oriented Al single crystal

Cited by 107 publications

References 9 publications

Deformation microstructures and selected examples of their recrystallization

Deformation microstructures and selected examples of their recrystallization

The Effect of a Grain Boundary on Deformation in an Aluminum Bicrystal with a Common Tensile Axis of [100]

Study of Anisotropic Plastic Behavior in High Pressure Torsion of Aluminum Single Crystal by Crystal Plasticity Finite Element Method

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