Location-dependent lattice rotation and shear strain in rolled aluminium single crystals of cube and Goss orientations

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

doi:10.1016/s1359-6454(00)00213-5

Cited by 54 publications

(38 citation statements)

References 17 publications

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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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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 mechanism associated with this particular type of rotation is now known. There is another deformation feature, known as deformation banding structures, 28,29) which also generate high angle interfaces within original grain interior. The distances between deformation band boundaries are much larger (depends on strain) than microband boundary separation, which is typically ~1 μm.…”

Section: Discussionmentioning

confidence: 99%

Unusual Crystallographic Aspects of Microband Boundaries within {111}^|^lt;110^|^gt; Oriented Grains in a Cold Rolled Interstitial Free Steel

et al. 2014

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Microbands are well-known deformation features that generate in the rolling microstructures of many metals and alloys. The boundaries across two neighbouring microbands are comprised of dense dislocation walls and they accommodate a small average crystallographic rotation in the range of 1-4°. In this study, a combination of high resolution electron backscattered diffraction (EBSD) and transmission electron microscopy (TEM) was used to observe orientation differences of up to 20° across microband boundaries in the rolling substructures of {111}<110> oriented grains in steel. Despite their high angle nature, the microband interfaces maintain their well-known crystallographic characteristics, by being closely aligned with highly stressed slip planes. Rigid body rotations are argued to take place around the interface normal between adjacent microband lattices. This results in an unusual microstructure whereby alternating microband boundaries, oriented in equal and opposite relative angles, produce an array of orientation pairs in their spatial distributions.

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“…Some studies on cold rolling 12,13) have demonstrated that the deformation homogeneity affects the crystal rotation axes. For example, inhomogeneous deformation brings about significant crystal rotation in the three directions (e.g.…”

Section: Texture and Microstructurementioning

confidence: 99%

“…8,12,13) However, work hardening would decrease heterogeneity of strain. 13,14) This could promote the homogeneous deformation region to spread to the surface of wire from the center with strain increasing.…”

Section: Texture and Microstructurementioning

confidence: 99%

Formation of High-Angle Dislocation Boundaries in Drawn Single Crystal Copper Wires

Chen

et al. 2015

Mater. Trans.

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The formation mechanism of the high angle boundaries in drawn single crystal copper wires was investigated using electron backscattering diffraction. Two stages for formation of high angle boundaries were found: at low strains, the high angle boundaries correspond to the boundaries between different fiber texture components referred to the drawn direction of wires while the high angle boundaries start to present within one fiber texture at high strains. The critical strain for the two-stage transformation depends on the initial orientations parallel to axis direction of single crystal wires. Such difference in formation of high angle boundaries with increasing strain is associated with the deformation homogeneity.

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Location-dependent lattice rotation and shear strain in rolled aluminium single crystals of cube and Goss orientations

Cited by 54 publications

References 17 publications

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

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

Unusual Crystallographic Aspects of Microband Boundaries within {111}^|^lt;110^|^gt; Oriented Grains in a Cold Rolled Interstitial Free Steel

Formation of High-Angle Dislocation Boundaries in Drawn Single Crystal Copper Wires

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