Microstructure and crystallographic texture of an ultrafine grained C–Mn steel and their evolution during warm deformation and annealing

Song, R.; Ponge, Dirk; Raabe, Dierk; Kašpar, Radko

doi:10.1016/j.actamat.2004.10.051

Cited by 275 publications

(152 citation statements)

References 46 publications

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“…5-8 that the developed micro-texture strongly depends on the site on the cross section in the rolled bars. In low carbon steels under plane strain-warm compression testing, as shown in some literatures, 19,21) the crystallographic texture is characterized by a strong -fiber. Similarly, even if such steel is compressed alternately from two directions, such as in the caliber rolling, the -fiber texture is produced around center and quarter.…”

Section: Deformation Modementioning

confidence: 99%

“…Furthermore, Figure 8 shows that the -fiber texture, which is typical of recrystallized rolled ferritic steels, and the ND == h101i fiber, which is a shear texture, do not appear in the present caliber rolling. This means that the structural changes during severe deformations at warm working temperatures are associated with the strain-induced continuous reaction 2,[18][19][20] and that no large shear deformation, as is usually observed in sheet rolling, is introduced near the surface in a caliber-rolled bar.…”

Section: Numerical Proceduresmentioning

confidence: 99%

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Crystallographic Texture of Warm Caliber-rolled Low Carbon Steel

2007

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The evolution of crystallographic texture with effective strain up to 5.9 is studied in low carbon steel bars fabricated using multi-pass warm caliber rolling. Three-dimensional finite element analysis was carried out to evaluate distributions of effective strain accumulated and strain components introduced with each pass through the rolled bars. The texture at characteristic deformation sites on the cross section in the bars was analyzed using the electron back-scattered diffraction method. Although the texture in the area around the center is dominated by a strong -fiber (RD == h101i), in the other two areas, an -fiber texture is not produced. It is clarified that this difference depends on three deformation modes during rolling. Consequently, the areas around the corners, where effective strain of over 5.7 is introduced, are filled with ultrafine ferrite grains of below 680 nm, and the texture in the areas is random regardless of the increase of the effective strain under a bi-directional simple compressive condition.

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Section: Deformation Modementioning

confidence: 99%

Section: Numerical Proceduresmentioning

confidence: 99%

Crystallographic Texture of Warm Caliber-rolled Low Carbon Steel

2007

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“…The evolution of the microstructure and texture occurring during the deformation and subsequent annealing can therefore be interpreted as a pronounced recovery process during which new grains are created without a preceding nucleation [30]. The result reveals that the magnetite preferred growth and transformation to occur after the hot rolling.…”

Section: Characterising Grain Sizesmentioning

confidence: 70%

Dependence of texture development on the grain size of tertiary oxide scales formed on a microalloyed steel

Jiang

Zhao

et al. 2015

Surface and Coatings Technology

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Q. (2015). Dependence of texture development on the grain size of tertiary oxide scales formed on a microalloyed steel. Surface and Coatings Technology, Dependence of texture development on the grain size of tertiary oxide scales formed on a microalloyed steel AbstractBoth orientational and geometrical characteristics of grains in tertiary oxide scales have been quantitatively investigated using the electron backscatter diffraction (EBSD) technique. Phase and orientation mappings demonstrate that the {001} planes of magnetite and the {0001} planes of hematite are parallel to the direction of oxide growth. Pole figures (PFs) as scattering plots clearly display the direct correlation between the orientations and microstructure sites of magnetite grains. Magnetite grains develop a strong rotated cube texture component that shifts to the {100} component, whereas those with the grain size of 1-5. μm develop the {001} cube texture component. The refined magnetite grains surrounding the abnormal ones can be a combined process, including magnetite pro-eutectoid during hot rolling and cooling and re-oxidation during air-cooling. Our findings offer insights toward further understanding of the link between the geometrical and orientation parameters of grains with respect to the deformation behaviour of oxide scales formed at elevated temperatures.

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“…However, the mechanism of such texture evolution differed from that of typical static recrystallization, and the deformation behavior was not thoroughly understood. In order to understand the mechanism of grain refinement and texture development in regions under large strain, 3,[6][7][8] the microstructure and texture variation should be determined according to " eq . In this study, the effect of " eq on the microstructural evolution was investigated under a plane strain condition using finite element analysis (FEA) and electron backscattered diffraction (EBSD) when an ultra-low carbon steel was compressed uniaxially at 773 K.…”

Section: Introductionmentioning

confidence: 99%

Effect of Strain on Microstructural Evolution under Warm Deformation in an Ultra-Low Carbon Steel

2009

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The microstructural evolution was investigated according to the equivalent strain in uniaxial compression using an ultra-low carbon steel. The equivalent strain was quantitatively calculated by using finite element analysis. The microstructure was rapidly refined up to the equivalent strain of 2.4 with the material flow to rolling direction (RD) with the remarkable development of high angle boundaries. At that time, texture such as (001)[110] and (111)[110] significantly developed. Inhomogeneous deformation behavior according to texture was observed; h100i == ND was elongated without the development of subgrain even under large strain, but h111i == ND was divided into small grains isolated with high angle boundaries.

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Microstructure and crystallographic texture of an ultrafine grained C–Mn steel and their evolution during warm deformation and annealing

Cited by 275 publications

References 46 publications

Crystallographic Texture of Warm Caliber-rolled Low Carbon Steel

Crystallographic Texture of Warm Caliber-rolled Low Carbon Steel

Dependence of texture development on the grain size of tertiary oxide scales formed on a microalloyed steel

Effect of Strain on Microstructural Evolution under Warm Deformation in an Ultra-Low Carbon Steel

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