Analysis of through-thickness heterogeneities of microstructure and texture in nickel after accumulative roll bonding

Zhang, Y. B.; Mishin, Oleg; Godfrey, A.

doi:10.1007/s10853-013-7703-0

Cited by 23 publications

(23 citation statements)

References 33 publications

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“…A pure (99.967 %) nickel sample with an initial grain size of approximately 20 µm, processed by ARB to a von Mises strain ε vM = 4.8 [9], was used in the present work. For this sample, the first 50 % rolling pass was conducted on a strip with an initial thickness of 2 mm, while stacking and bonding cycles started from the second pass.…”

Section: Methodsmentioning

confidence: 99%

“…A larger step size of 0.5 µm was used for analysis of recrystallization and texture, for which a total area of at least 1 mm 2 was mapped covering the entire thickness of the sample. Since considerable differences in the microstructure and texture were observed in the deformed sample between subsurface, intermediate and central layers [9], these layers were analyzed separately in the present work also for the annealed samples. Each of these layers was defined as 1/5 of the sample thickness (see Fig.…”

Section: Methodsmentioning

confidence: 99%

“…For example, the average boundary spacing measured along the normal direction (ND) in ARB-processed nickel after a von Mises strain ε vM of 6.4 is ~0.1 µm and the fraction of HABs is ~60 % [3]. There are, however, significant through-thickness heterogeneities both in texture [4][5][6][7][8][9][10] and in the deformed microstructure [9][10][11][12][13][14] after ARB. The latter has been observed both at the microscopic scale and at the sample scale.…”

Section: Introductionmentioning

confidence: 99%

“…At the sample scale, microstructural heterogeneities have been described in terms of high misorientation regions (HMRs) and low misorientation regions (LMRs) found in different proportions in subsurface, intermediate and center layers of the ARB stack [9].…”

Section: Introductionmentioning

confidence: 99%

“…In this work, the influence of both microstructural and sample-scale heterogeneities on the recrystallization behavior is investigated using an ARB-processed nickel sample that has previously been shown to contain both microscopic and sample-scale heterogeneities after deformation [9].…”

Section: Introductionmentioning

confidence: 99%

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The influence of multiscale heterogeneity on recrystallization in nickel processed by accumulative roll bonding

2016

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Microscopic and sample-scale heterogeneities have been characterized in nickel processed by accumulative roll bonding to a von Mises strain of 4.8, and their influence on recrystallization has been analyzed. The microscopic heterogeneities in this material are mostly associated with regions near the bonding interface, which are more refined and thus possess a higher stored energy than other regions. These regions also contain characteristic particle deformation zones around fragments of the steel wire brush used to prepare the surface for bonding. The sample-scale heterogeneities are seen as variations in the distribution of different texture components and in the fractions of high misorientation regions between the subsurface, intermediate and center layers. Each of these heterogeneities affects the progress of recrystallization. Regions near bonding interfaces, particle deformation zones and shear bands are all found to act as preferential nucleation sites. On the sample scale, recrystallization proceeds faster in the intermediate layer than in the center and subsurface layers. Comparing the progress of recrystallization in ARB-processed nickel and conventionally rolled nickel, it is evident that * Corresponding author: e-mail: olmi@dtu.dk 1 additional deformation heterogeneities induced by ARB result in nucleation taking place over a more extended period of time.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The influence of multiscale heterogeneity on recrystallization in nickel processed by accumulative roll bonding

2016

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Texture Modeling of Accumulative Roll‐Bonding Processed Aluminum Single Crystal {1 2 3}<6 3 4> by Crystal Plasticity FE

et al. 2018

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Texture modeling of accumulative roll‐bonding (ARB) is challenging due to the involved cutting, stacking, and roll‐bonding. In the present study, the crystal plasticity finite element model is used to study the texture evolution in an ARB processed aluminum single crystal. The predictions, after being validated by the experimental observations, are analyzed, and an inhomogeneous through‐thickness deformation, in terms of slip system activation, crystal rotation, and shear strain, is revealed. It is found that the cutting‐stacking causes shear strain reversal and crystal rotation reversal. The dynamic balance between the formed and destroyed (4 4 11)[11 11 ] and (0 0 1)[1 1 0] makes them stable in area fraction. Besides, another modeling skill, Submodel, is used to improve the texture prediction by increasing the mesh resolution in smaller regions, and microbands associated with the primarily activated slip systems are predicted in the Submodel.

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Texture and Microstructure After Roll-Bonding of an Fe-Al Multilaminate

Hanon,

Malet,

Delannay

2023

Lecture Notes in Mechanical Engineering

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Analysis of through-thickness heterogeneities of microstructure and texture in nickel after accumulative roll bonding

Cited by 23 publications

References 33 publications

The influence of multiscale heterogeneity on recrystallization in nickel processed by accumulative roll bonding

The influence of multiscale heterogeneity on recrystallization in nickel processed by accumulative roll bonding

Texture Modeling of Accumulative Roll‐Bonding Processed Aluminum Single Crystal {1 2 3}<6 3 4> by Crystal Plasticity FE

Texture and Microstructure After Roll-Bonding of an Fe-Al Multilaminate

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