Orientation dependence of dislocation structure evolution during cold rolling of aluminum

Merriman, C.C.; Field, David P.; Trivedi, P. B.

doi:10.1016/j.msea.2007.10.090

Cited by 95 publications

(40 citation statements)

References 19 publications

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“…The orientation dependence shown in figure 7 is in a good agreement with GND measurement using conventional EBSD approach in pure aluminium sample deformed in channel die compression by Merriman et al (Merriman et al, 2008). They also found that orientation with higher Taylor factor stored more GNDs than the lower ones.…”

Section: Discussionsupporting

confidence: 86%

“…Furthermore, as Merriman et al measured GND density in pure aluminium samples deformed in channel die compression using conventional EBSD and reported that the development of GND density has strong orientation dependence (Merriman et al, 2008). Our study intends to further investigate the orientation dependent of GND structure.…”

Section: Development Of High Resolution Electron Backscatter Diffractmentioning

confidence: 78%

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The orientation and strain dependence of dislocation structure evolution in monotonically deformed polycrystalline copper

Jiang

Britton

Wilkinson

2015

International Journal of Plasticity

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Section: Discussionsupporting

confidence: 86%

Section: Development Of High Resolution Electron Backscatter Diffractmentioning

confidence: 78%

The orientation and strain dependence of dislocation structure evolution in monotonically deformed polycrystalline copper

Jiang

Britton

Wilkinson

2015

International Journal of Plasticity

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“…The high intragranular local misorientation in grains along the 110  fibre was previously reported in austenitic stainless steel [49]. This phenomenon was attributed to grain-to-grain interaction such that the presence of stable 111  oriented grains results in preferential plastic flow in the unstable 110  16 oriented grains [50]. An example of grain-to-grain interaction is given in Section 5.5 in the second set of VPSC simulations.…”

Section: The Dependence Of the Intragranular Local Misorientation On mentioning

confidence: 65%

“…It is noted that previous studies have tended to correlate the dependence of the intragranular local misorientation on grain orientation to the Taylor factor; such that grains with larger Taylor factor values possess a higher density of geometrically necessary dislocations [40,50]. However, such correlations ignore: (i) the inability of the Taylor model to account for deformation inhomogeneities and, (ii) that the Taylor factor is only a measure of a material's current state without considering its prior deformation history [54].…”

Section: The Dependence Of the Intragranular Local Misorientation On mentioning

confidence: 99%

Microstructure and texture evolution in a twinning-induced-plasticity steel during uniaxial tension

2013

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. (2013). Microstructure and texture evolution in a twinning-induced-plasticity steel during uniaxial tension. Acta Materialia, 61 (7), 2671-2691.Microstructure and texture evolution in a twinning-induced-plasticity steel during uniaxial tension AbstractA combination of electron back-scattering diffraction and X-ray diffraction was used to track the evolution of the microstructure and texture of a fully recrystallized Fe-24 Mn-3 Al-2 Si-1 Ni-0.06 C twinning-inducedplasticity steel during interrupted uniaxial tensile testing. Texture measurements returned the characteristic double fibre texture for face-centred cubic materials, with a relatively stronger 〈1 1 1〉 and a weaker 〈1 0 0〉 partial fibre parallel to the tensile axis. The interaction with the stable 〈1 1 1〉 oriented grains results in preferential plastic flow in the unstable 〈1 1 0〉 oriented grains. Consequently, the grains oriented along the 〈1 1 0〉 and 〈1 0 0〉 fibres record the highest and lowest values of intragranular local misorientation, respectively. The viscoplastic self-consistent model was used to simulate the macroscopic stress-strain response as well as track the evolution of bulk crystallographic texture by detailing the contributions of perfect and/or partial slip, twinning and latent hardening. The simulations revealed the dominant role of perfect slip and the limited volume effect of twinning on the texture development. The effects of initial orientation and grain interaction on the overall orientation stability during uniaxial tension showed that while the 〈1 0 0〉 fibre remains stable and does not affect the unstable orientations along the 〈1 1 0〉 fibre, the orientations along the stable 〈1 1 1〉 fibre strongly affect the unstable 〈1 1 0〉 orientations. on the overall orientation stability during uniaxial tension showed that while the 100  fibre remains stable and does not affect the unstable orientations along the 110  fibre, the orientations along the stable 111  fibre strongly affect the unstable 110  orientations.

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“…Fig. 12 shows the predicted evolution of average dislocation density,  ig , for the alloys considered in the present work, together with data on dislocation densities for selected Al alloys obtained from the literature [49,50,81,82]. Fig.…”

Section: Structure Of Lagbs and Hagbs And Dislocation Densitiesmentioning

confidence: 99%

A model of grain refinement and strengthening of Al alloys due to cold severe plastic deformation

Qiao

Gao

Starink

2012

Philosophical Magazine

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This paper presents a model which quantitatively predicts grain refinement and strength/hardness of Al alloys after very high levels of cold deformation through processes including cold rolling, equal channel angular pressing (ECAP), multiple forging (MF), accumulative rolling bonding (ARB) and embossing. The model deals with materials in which plastic deformation is exclusively due to dislocation movement, which is in good approximation the case for aluminium alloys. In the early stages of deformation, the generated dislocations are stored in grains and contribute to overall strength. With increase in strain, excess dislocations form and/or move to new cell walls/grain boundaries and grains are refined. We examine this model using both our own data as well as the data in the literature. It is shown that grain size and strength/hardness are predicted to a good accuracy.

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Orientation dependence of dislocation structure evolution during cold rolling of aluminum

Cited by 95 publications

References 19 publications

The orientation and strain dependence of dislocation structure evolution in monotonically deformed polycrystalline copper

The orientation and strain dependence of dislocation structure evolution in monotonically deformed polycrystalline copper

Microstructure and texture evolution in a twinning-induced-plasticity steel during uniaxial tension

A model of grain refinement and strengthening of Al alloys due to cold severe plastic deformation

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