Grain growth in anisotropic systems: comparison of effects of energy and mobility

Kazaryan, A.; Wang, Yongqiang; Dregia, S.A.; Patton, Bruce R.

doi:10.1016/s1359-6454(02)00078-2

Cited by 171 publications

(95 citation statements)

References 22 publications

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“…Peaks in anisotropic distributions commonly reach values of 5 to 10 MRD and, even in a relatively isotropic material (Al), peaks in excess of 3 MRD are commonly observed [3]. Furthermore, based on the results of experiments [4,5] and computer simulations in two and three dimensions [6][7][8][9][10], the GBCD is inversely correlated to the grain boundary energy. The only available comprehensive experimental data indicates that the logarithm of the population is approximately linear with the energy, which is consistent with the results of a three-dimensional computer simulation [6,10,11].…”

Section: Introductionmentioning

confidence: 99%

A Model for the Origin of Anisotropic Grain Boundary Character Distributions in Polycrystalline Materials

Rohrer¹,

Gruber²,

Rollett³

2008

Ceramic Transactions Series

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Section: Introductionmentioning

confidence: 99%

A Model for the Origin of Anisotropic Grain Boundary Character Distributions in Polycrystalline Materials

Rohrer¹,

Gruber²,

Rollett³

2008

Ceramic Transactions Series

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“…The exact mechanisms underpinning the occurrence of AGG are still unclear and remain a subject of much interest and research. Though debate on specific mechanisms exists, most authors agree that the formation of AGG is related to low-energy, high-mobility grain boundaries such as ∑3 and its variants (e.g., ∑9 and ∑27) [8][9][10][11][12][13][14][15][16]. This is of note as Grain Boundary Engineering (GBE) is a specific type of thermomechanical process used to improve material properties by altering their grain boundary network and often resulting in increased frequency of ∑3 boundaries [17,18].…”

Section: Introductionmentioning

confidence: 99%

Emergence and Progression of Abnormal Grain Growth in Minimally Strained Nickel-200

Underwood

Madison

Thompson

2017

Metals

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Grain boundary engineering (GBE) is a thermomechanical processing technique used to control the distribution, arrangement, and identity of grain boundary networks, thereby improving their mechanical properties. In both GBE and non-GBE metals, the phenomena of abnormal grain growth (AGG) and its contributing factors is still a subject of much interest and research. In a previous study, GBE was performed on minimally strained (ε < 10%), commercially pure Nickel-200 via cyclic annealing, wherein unique onset temperature and induced strain pairings were identified for the emergence of AGG. In this study, crystallographic segmentation of grain orientations from said experiments are leveraged in tandem with image processing to quantify growth rates for abnormal grains within the minimally strained regime. Advances in growth rates are shown to vary directly with initial strain content but inversely with initiating AGG onset temperature. A numeric estimator for advancement rates associated with AGG is also derived and presented.

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“…Recently, computer simulation becomes indispensable in exploring the details of grain growth and validating the analytical models. Simulation models for this purpose include the Potts model, [4][5][6][7][8][9] the vertex model, [10][11][12][13][14] the phase field model 1,[15][16][17][18][19][20] and others. Though the Potts model has advantages in the simplicity of switching rules, it is still not intuitive to scale the Monte Carlo time to the physical time.…”

Section: Introductionmentioning

confidence: 99%

Lattice Boltzmann models for the grain growth in polycrystalline systems

Zheng

Chen

et al. 2016

AIP Advances

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In the present work, lattice Boltzmann models are proposed for the computer simulation of normal grain growth in two-dimensional systems with/without immobile dispersed second-phase particles and involving the temperature gradient effect. These models are demonstrated theoretically to be equivalent to the phase field models based on the multiscale expansion. Simulation results of several representative examples show that the proposed models can effectively and accurately simulate the grain growth in various single- and two-phase systems. It is found that the grain growth in single-phase polycrystalline materials follows the power-law kinetics and the immobile second-phase particles can inhibit the grain growth in two-phase systems. It is further demonstrated that the grain growth can be tuned by the second-phase particles and the introduction of temperature gradient is also an effective way for the fabrication of polycrystalline materials with grained gradient microstructures. The proposed models are useful for the numerical design of the microstructure of materials and provide effective tools to guide the experiments. Moreover, these models can be easily extended to simulate two- and three-dimensional grain growth with considering the mobile second-phase particles, transient heat transfer, melt convection, etc.

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Grain growth in anisotropic systems: comparison of effects of energy and mobility

Cited by 171 publications

References 22 publications

A Model for the Origin of Anisotropic Grain Boundary Character Distributions in Polycrystalline Materials

A Model for the Origin of Anisotropic Grain Boundary Character Distributions in Polycrystalline Materials

Emergence and Progression of Abnormal Grain Growth in Minimally Strained Nickel-200

Lattice Boltzmann models for the grain growth in polycrystalline systems

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