Analysis of deformation texture inhomogeneity and stability condition of shear components in f.c.c. metals

Choi, Chang-Hee; Kwon, Jae-Wook; Oh, Kyu Hwan; Lee, Dong Nyung

doi:10.1016/s1359-6454(97)00169-9

Cited by 67 publications

(40 citation statements)

References 21 publications

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“…[14] yields to the Eq. [15]: is an arbitrary function of x, which is determined by means of boundary conditions. According to the boundary condition (iii), the z-component of the velocity is 0 if z s equals to 0, for all values of x, therefore, the function g(x) for this condition is equal to 0.…”

Section: Velocity Fieldmentioning

confidence: 99%

“…[10] and [15], fulfilling all the proposed conditions, is thereby completely determined. Based on the analytical expressions for v x and v z , the velocity gradient tensor can be calculated.…”

Section: ½18mentioning

confidence: 99%

“…[13] An overview of these models is given by Qie et al [14] Numerous literature sources report on the calculation of the velocity gradient tensor coupled with polycrystal plasticity models. [15][16][17][18] Choi et al [15] used the FE method to calculate the local strain evolution. Van Houtte et al used an incremental texture updating procedure in a FE model of a cup drawing process.…”

Section: Introductionmentioning

confidence: 99%

“…The non uniform velocity gradient field across the thickness of a rolled sheet explains the through-thickness texture gradient, as reported in numerous literature sources. [15,18,27] The flow line models are capable of reproducing the shear component in the rolling plane by assigning heterogeneous velocity distribution at the end of the flowline. However, current state of the art does not contain a streamline formulation with a continuous velocity field homogeneous outside of the deformation zone, and which can alter when different frictional conditions applied between the rolls and the plate's surface.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A New Analytical Approach for the Velocity Field in Rolling Processes and Its Application in Through-Thickness Texture Prediction

Decroos

Sidor

Seefeldt

2013

Metall Mater Trans A

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A new analytical model is presented that expresses kinematically admissible velocity fields in rolling processes. Opposed to conventional streamline approaches, the current model does not force the material to flow along the prescribed lines, but introduces a new coordinate that is constant over these lines, to prescribe a fixed component of the velocity in the rolling direction as a function of that coordinate and the coordinate along the rolling direction. The interaction between the rolls and the surface is incorporated in the model via two scalar parameters which depend on the friction conditions between the roll and the sheet, and the properties of rolled material. The scalar parameters can be tuned with experimental observations of deformation flow across the thickness. The modelled material flow does not reveal significant deviation from the one calculated by streamlines. The obtained analytical expressions for the velocity gradient tensor components combined with polycrystal plasticity models enables the prediction of the through-thickness texture evolution for various friction conditions.

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Section: Velocity Fieldmentioning

confidence: 99%

Section: ½18mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A New Analytical Approach for the Velocity Field in Rolling Processes and Its Application in Through-Thickness Texture Prediction

Decroos

Sidor

Seefeldt

2013

Metall Mater Trans A

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“…In the works on copper and aluminum (Lee and Duggan, 1991;Vatne, Daaland andNes, 1994 andChoi et al, 1997) The appearance of secondary recrystallization is likely to be preceded by a certain increase in spread followed by a decrease in the volume fraction of the cube texture. The higher the temperature at which the secondary recrystallization takes place, the higher the opportunity of decreasing the cube-texture scattering.…”

Section: Discussionmentioning

confidence: 99%

Influence of Rolling Temperature on the Perfection Degree of Recrystallization Cube Texture in Nickel

Соколов

Gervasyeva

Родионов

et al. 2001

Textures and Microstructures

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The effect of the rolling temperature on the deformation texture and the perfection degree of a cube texture in pure-nickel thin tape were investigated. The kinetics of primary recrystallization was studied on samples that had undergone rolling at different temperatures and the temperature of the onset of secondary recrystallization was determined. Regularities of the structure formation in the samples are discussed. It is established that the cube texture with the maximum sharpness is produced in the samples rolled at room temperature.

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Texture‐Induced Anisotropy in Asymmetrically Rolled Aluminium Alloys

2011

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The formability of Al alloys is strongly correlated to the crystallographic texture and thus can be controlled by thermomechanical processing parameters. Texture‐induced anisotropy is studied in asymmetrically hot and cold rolled Al alloys from the 6xxx series. It is found that the strain mode of both hot and cold rolling processes significantly affects the anisotropy of recrystallized material. The recrystallization textures produced in the ASR process improve the normal anisotropy, whereas the in‐plane anisotropy does not benefit significantly from the ASR process. Results of crystal plasticity calculations show that an improved normal anisotropy in asymmetrically rolled sheets (${\bar {r}}$ = 0.77) ensures an increased limiting drawing ratio of ≈ 2.11, which is beneficial for formability.

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Analysis of deformation texture inhomogeneity and stability condition of shear components in f.c.c. metals

Cited by 67 publications

References 21 publications

A New Analytical Approach for the Velocity Field in Rolling Processes and Its Application in Through-Thickness Texture Prediction

A New Analytical Approach for the Velocity Field in Rolling Processes and Its Application in Through-Thickness Texture Prediction

Influence of Rolling Temperature on the Perfection Degree of Recrystallization Cube Texture in Nickel

Texture‐Induced Anisotropy in Asymmetrically Rolled Aluminium Alloys

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