Watching the Growth of Bulk Grains During Recrystallization of Deformed Metals.

Schmidt, Søren; Nielsen, Søren Fæster; Gundlach, Carsten; Margulies, L.; Huang, Xiaoting; Jensen, D. Juul

doi:10.1002/chin.200439009

Cited by 35 publications

(44 citation statements)

References 1 publication

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“…4, from which the overall growth can be analyzed. Similar characteristic features as found in the earlier experiment 11) are observed for this grain, although it is growing into a different deformed matrix: most boundary segments migrate in a stop-go fashion and several protrusions can be found. However, different from the earlier experiment is that most of the growth of the grain happens through the migration of one planar boundary segment (facet) in the direction almost parallel to RD.…”

Section: Overall Growth and Crystallographic Orientationssupporting

confidence: 87%

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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Section: Overall Growth and Crystallographic Orientationssupporting

confidence: 87%

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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“…In particular, the migration of the recrystallizing boundary is quite rapid in the early stage of annealing, slowing down with time, and then in the last stage of annealing remaining fixed for much of the boundary length. Locally the boundary migration is also very inhomogeneous: i) some boundary segments migrate faster than others; ii) a so-called stop-go motion [1,2,6] is observed locally. Three pinning positions, marked as A, B and C in Fig.…”

Section: Resultsmentioning

confidence: 99%

Kinetics of Thermal Grooving during Low Temperature Recrystallization of Pure Aluminum

Zhang

Godfrey

Jensen

2013

MSF

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Abstract. The migration of a recrystallization boundary in pure aluminum was followed during in situ annealing in a scanning electron microscope. The microstructure was characterized using the electron channeling contrast technique, and a typical stop-go grain boundary motion was observed during annealing. Thermal grooving associated with boundary migration on the inspected free surface was characterized after the in-situ experiment using atomic force microscopy. The results show that new thermal grooves develop at places where the recrystallization boundary segments remain stationary for a relatively long time. The kinetics of thermal grooving are determined and effects hereof on the boundary migration as well as influence on its formation from surface oxidation layer are discussed.

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“…However, in reality boundaries do not migrate all the time during the recrystallization process, even when there are no pinning effects. In-situ 3 dimensional x-ray diffraction (3DXRD) characterization of recrystallization has shown, for example, that the recrystallization boundaries migrate in a very complex way [3]. The migration of individual boundary segments occurs in a jerky move-stop-move type fashion, and locally fairly large protrusions (and detrusions) form on many boundaries.…”

Section: V=mfmentioning

confidence: 99%

Boundary Migration during Recrystallization of Heavily Deformed Pure Nickel

Zhang

Jensen

Godfrey

2012

MSF

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Abstract. The detailed microstructure in front of recrystallization boundaries and their migration during annealing were traced using ex-situ electron backscatter pattern maps of one and the same surface area taken after annealing. It is observed that many protrusions/detrusions form on the recrystallizing boundaries. During annealing, the recrystallization boundary segments migrate in a stop-go type of fashion, while protrusions and detrusions alternately form and disappear. The correlation between the protrusions/detrusions and the stop-go type of migration are briefly discussed.

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Watching the Growth of Bulk Grains During Recrystallization of Deformed Metals.

Cited by 35 publications

References 1 publication

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

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

Kinetics of Thermal Grooving during Low Temperature Recrystallization of Pure Aluminum

Boundary Migration during Recrystallization of Heavily Deformed Pure Nickel

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