Importance of Local Structural Variations on Recrystallization

Jensen, D. Juul; Lin, Fengxiang; Zhang, Yu Bin; Zhang, Yonghao

doi:10.4028/www.scientific.net/msf.753.37

Cited by 14 publications

(10 citation statements)

References 23 publications

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“…As can be seen from Fig. 1, the protrusions and retrusions on recrystallization boundaries form on various length scales, and there are sawtooth shaped protrusions/retrusions with sharp peaks as well as relatively round ones, in agreement with what has been reported before [12]. For the present study, two sampling radii:1 μm and 3 μm, are chosen to calculate the roughness parameters.…”

supporting

confidence: 78%

“…The cold rolled microstructures are subdivided by dislocations and various types of dislocation boundaries forming hierarchical structures with finer length scales at higher strains [12,15]. In the deformed matrix in front of the recrystallization boundaries, typically there will be large variations in local orientations, stored energies as well as dislocation boundary arrangements.…”

mentioning

confidence: 99%

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Roughness of grain boundaries in partly recrystallized aluminum

2017

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confidence: 78%

mentioning

confidence: 99%

Roughness of grain boundaries in partly recrystallized aluminum

2017

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“…4,5) In order to better understand recrystallization it is necessary to study the phenomenon of grain boundary kinetics on the local (micrometer) scale.…”

Section: Introductionmentioning

confidence: 99%

Direct Observation of Grain Boundary Migration during Recrystallization within the Bulk of a Moderately Deformed Aluminium Single Crystal

et al. 2014

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A single grain growing in the bulk of a mildly deformed (30% thickness reduction through cold rolling) aluminium single crystal with an f001gh100i orientation (Cube orientation), is monitored during recrystallization with synchrotron radiation using topo-tomography. The formation and migration of planar boundary segments (facets) are analyzed using a method that determines the displacements of local boundary segments along parallel lines perpendicular to the facet plane. Facets are observed to form after a certain annealing time. They migrate at a constant rate for extended periods of time and remain planar during their migration. A change in the migration rate for one facet has been observed which is not related to changes in the experimental conditions and is most likely to be driven by the changes in grain orientation and/or the local deformation microstructure. The crystallography of the analyzed facets is not closely related to any crystallographic {111} plane of neither the growing grain nor the disappearing deformed matrix.

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“…The high angle interface generated within grain O near the N/O boundary (figure 5) is also a potential site for recrystallization. Juul Jensen et al [41], Hansen et al [42] and Godfrey et al [43] reported the early growth of subgrains at irregular boundary interfaces and concluded that local variations in texture (orientation) and microstructure (stored energy) play a major role in recrystallization.…”

Section: Uncovering Highly Misoriented Fragments At Hotband Grain Boumentioning

confidence: 99%

Uncovering the true nature of deformation microstructures using 3D analysis methods

Ferry

Quadir

Afrin

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Three-dimensional electron backscatter diffraction (3D EBSD) has emerged as a powerful technique for generating 3D crystallographic information in reasonably large volumes of a microstructure. The technique uses a focused ion beam (FIB) as a high precision serial sectioning device for generating consecutive ion milled surfaces of a material, with each milled surface subsequently mapped by EBSD. The successive EBSD maps are combined using a suitable post-processing method to generate a crystallographic volume of the microstructure. The first part of this paper shows the usefulness of 3D EBSD for understanding the origin of various structural features associated with the plastic deformation of metals. The second part describes a new method for automatically identifying the various types of low and high angle boundaries found in deformed and annealed metals, particularly those associated with grains exhibiting subtle and gradual variations in orientation. We have adapted a 2D image segmentation technique, fast multiscale clustering, to 3D EBSD data using a novel variance function to accommodate quaternion data. This adaptation is capable of segmenting based on subtle and gradual variation as well as on sharp boundaries within the data. We demonstrate the excellent capabilities of this technique with application to 3D EBSD data sets generated from a range of cold rolled and annealed metals described in the paper.

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Importance of Local Structural Variations on Recrystallization

Cited by 14 publications

References 23 publications

Roughness of grain boundaries in partly recrystallized aluminum

Roughness of grain boundaries in partly recrystallized aluminum

Direct Observation of Grain Boundary Migration during Recrystallization within the Bulk of a Moderately Deformed Aluminium Single Crystal

Uncovering the true nature of deformation microstructures using 3D analysis methods

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