Stability of {4 4 11} &amp;lang;11 11 8&amp;rang; Orientation in a {123} &amp;lang;634&amp;rang; Aluminum Single Crystal Processed by Accumulative Roll Bonding

Kashihara, Koji; Komi, Yoshikazu; Terada, Daisuke; Tsuji, Nobuhiro

doi:10.2320/matertrans.l-m2014833

Cited by 8 publications

(9 citation statements)

References 15 publications

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“…Another example to show the effect of shear strain change to texture is that the maximum intensity of shear texture was observed at the subsurface [1], but not the exact surface that experienced shear strain reversal after passing the neutral point. Moreover, a close inspection of all four reports [22][23][24][25] concerning ARB processed single crystals revealed another type of texture transition that has not been reported, as shown in Fig.10. The positions that texture reversal (rotating toward the initial orientation, but not transitioning from shear to rolling texture) occurred were marked by 'Rev' in Fig.10, and where these positons came from in the last cycle were also marked by brackets.…”

Section: Texture and Microstructure Evolution In Arbmentioning

confidence: 80%

“…It is worth noting that the ARB in Refs. [22][23][24] was conducted under lubricated conditions, in which the variation of shear strain through the thickness is very low [1,5] and a uniform distribution of texture was expected [1,26]. The positions of texture reversal in Fig.10 are not only limited to the centre.…”

Section: Texture and Microstructure Evolution In Arbmentioning

confidence: 99%

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A new finite element model for multi-cycle accumulative roll-bonding process and experiment verification

Hui

et al. 2018

Materials Science and Engineering: A

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Section: Texture and Microstructure Evolution In Arbmentioning

confidence: 80%

Section: Texture and Microstructure Evolution In Arbmentioning

confidence: 99%

A new finite element model for multi-cycle accumulative roll-bonding process and experiment verification

Hui

et al. 2018

Materials Science and Engineering: A

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“…Being able to access the former (intra-grain deformation) means the CPFEM model can simulate the deformation texture in (strongly anisotropic) single crystals that is the material used in this study. Non-uniform through-thickness deformation and cutting-stacking in ARB would result in misorientation angles at the bonded interfaces 15,16 , as shown later in this study, and the deformation behaviour at the interfacial boundaries can be simulated by the CPFEM model because of its capability to access inter-grain interaction 8 .…”

Section: Introductionmentioning

confidence: 75%

A crystal plasticity FEM study of through-thickness deformation and texture in a {112} <111> aluminium single crystal during accumulative roll-bonding

Wang

Lü

Deng

et al. 2019

Sci Rep

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In this study, a crystal plasticity finite element method (CPFEM) model was used to study the deformation behaviour in an aluminium single crystal (1 1 2)[1 1 -1] processed by accumulative roll-bonding (ARB) up to 9 cycles. The simulation followed the real ARB process based on the developed finite element model. The predicted through-thickness texture matches well with the experimental observations. The deformation behaviours, in terms of crystal rotation, shear strain and slip system activation, in the first and second cycles (conventional rolling) were unidirectional, but the deformation was altered after ARB was applied from the third cycle onwards. Such alteration was found to be caused by the thickness position change and deformation discontinuity at interfaces, which were investigated in detail. The role that interfaces play became dominant over thickness position change as increasing ARB cycles.

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“…In Dev20 and Dev45, the activated slip systems are supposed to be different from grain to grain due to the greatly scattered initial orientations and strong grain-interaction. It is believed that the strong grain interaction is responsible for the large crystal rotation angles (>15°) in Dev20 and Dev45 (Fig.5d), since the crystal rotation angle is usually below 15° for deformed single crystals that have no grain-interaction [11,[45][46][47], i.e., uniform initial orientations, and moreover, the crystal rotation angles in the inner grain, caused by initial orientation, is also at the level of 15° (Fig.3d). In Dev20, 29.3%, 34% and 36.7% of the 11200 elements have RD, ND and TD as the main rotation axis (Fig.9b), respectively, and the crystal rotations about the three axes are comparable ( Fig.5c).…”

Section: Discussionmentioning

confidence: 99%

Coupled effects of initial orientation scatter and grain-interaction to texture evolution: a crystal plasticity FE study

Wang

Lü

et al. 2018

Int J Mater Form

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Coupled effects of initial orientation scatter and grain-interaction to texture Coupled effects of initial orientation scatter and grain-interaction to texture evolution: a crystal plasticity FE study evolution: a crystal plasticity FE study Abstract Abstract Grain orientation and neighbourhood are two main factors that determine the in-grain and global texture. The coupled effects of them to texture evolution has not been well understood. In this work, initial orientations scattered from exact Cube at four different levels (2 ° , 5 ° , 20 ° and 45 ° ) were developed, running from near single crystal to polycrystal, which yielded grain-interaction at various grades. A crystal plasticity finite element model was developed and the predicted texture after a 50% and 75% reduction has been validated by experimental observations of both single crystals and polycrystals. When the deviation angles are small, the global texture is similar to that in exact Cube, where crystal rotation about transverse direction is dominant. Initial orientations of large scatter and grains of strong interaction led to high crystal rotations and the formation of rolling texture. To study the grain-interaction to specific grains, the orientations of neighbouring grains were replaced. It was found that texture evolution in the region close to grain boundaries is sensitive to grain-interaction, while crystal rotations in the inner region are basically determined by the initial orientation.Abstract: Grain orientation and neighbourhood are two main factors that determine the in-grain and global texture. The coupled effects of them to texture evolution has not been well understood. In this work, initial orientations scattered from exact Cube at four different levels (2°, 5°, 20° and 45°) were developed, running from near single crystal to polycrystal, which yielded grain-interaction at various grades. A crystal plasticity finite element model was developed and the predicted texture after a 50% and 75% reduction has been validated by experimental observations of both single crystal and polycrystal. When the deviation angles are small, the global texture is similar to that in exact Cube, where crystal rotation about transverse direction is dominant. Initial orientations of large scatter and grains of strong interaction led to high crystal rotations and formation of rolling texture. To study the grain-interaction to specific grains, the orientations of neighbouring grains were replaced. It was found that texture evolution in the region close to grain boundaries is sensitive to grain-interaction, while crystal rotations in the inner region are basically determined by the initial orientation.

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Stability of {4 4 11} &lang;11 11 8&rang; Orientation in a {123} &lang;634&rang; Aluminum Single Crystal Processed by Accumulative Roll Bonding

Cited by 8 publications

References 15 publications

A new finite element model for multi-cycle accumulative roll-bonding process and experiment verification

A new finite element model for multi-cycle accumulative roll-bonding process and experiment verification

A crystal plasticity FEM study of through-thickness deformation and texture in a {112} <111> aluminium single crystal during accumulative roll-bonding

Coupled effects of initial orientation scatter and grain-interaction to texture evolution: a crystal plasticity FE study

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