Analysis of dynamic recrystallization behaviors in resistance heating compressions of heat-resistant alloy by multi-field and multi-scale coupling method

Quan, Guo-zheng; Zhang, Kaikai; An, Chao; Qiu, Huimin; Xia, Yu-feng

doi:10.1016/j.commatsci.2018.03.016

Cited by 18 publications

(11 citation statements)

References 19 publications

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“…Assuming that the DRX grain is spherical, the DRX grain growth driving force can be described as the stored strain energy difference between the DRX grains and the matrix [38], the grain boundary energy can be obtained from the Read–Shockley equation [30]. Meanwhile, the growth velocity of DRX grain, , is positively proportional to the per-unit driving force, the equation is shown in Refs.…”

Section: Experiments and Calculation Methodsmentioning

confidence: 99%

“…50×50 Strain rate, time step, strain 2015 [29] SNCrW w8000 Temperature, strain rate 2018 [30] Mg-Al-Zn-RE w8000 Temperature, strain rate 2020 [31] Pure copper…”

Section: St3smentioning

confidence: 99%

“…Cellular Automata (CA) is a stochastic model for capturing the progression of a system in discrete space and time. In recent years, some CA models have been used to simulate the solidification structure [21][22][23][24][25][26] and the dynamic recrystallization (DRX) process [27][28][29][30][31][32]. Several types of research and their characteristics are summarized in Table 1, and it can be noted that most of those studies only computed for a single process of casting or deformation, as well as assumed a homogeneous state of a billet before dynamic recrystallization.…”

Section: Introductionmentioning

confidence: 99%

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Influence of hot-core heavy reduction rolling on microstructure uniformity of casting billet

Wang

et al. 2022

Ironmaking & Steelmaking

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The hot-core heavy reduction rolling (HHR 2 ) technology is a solidification end reduction technique to enhance the quality of steel. In the current study, the Cellular Automata (CA) calculation is applied to investigate the casting process before HHR2 and the HHR2 dynamic recrystallization (DRX) process. The experimental data and calculation data are compared to verify the accuracy of the method and models. Afterward, based on the actual casting process, the solidification structure in the thickness direction of a billet is calculated, and the influence on the HHR2 grain size of various conditions, such as rolling speed, deformation temperature, and reduction strain, is simulated. Furthermore, based on the fixed HHR2 process, the influence of different superheats, casting speeds, and cooling conditions on the core-surface temperature schedule and the grain size before and after HHR2 deformation is calculated. Finally, the process optimization trend to produce high-carbon bearing steel billet is obtained.

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Section: Experiments and Calculation Methodsmentioning

confidence: 99%

“…50×50 Strain rate, time step, strain 2015 [29] SNCrW w8000 Temperature, strain rate 2018 [30] Mg-Al-Zn-RE w8000 Temperature, strain rate 2020 [31] Pure copper…”

Section: St3smentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of hot-core heavy reduction rolling on microstructure uniformity of casting billet

Wang

et al. 2022

Ironmaking & Steelmaking

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“…Then the functional expression for the first finite element is as follows [1,2,[12][13][14][15][16]:…”

Section: T Andmentioning

confidence: 99%

“…In order to obtain numerical results, let us set specific application problems for the parameters in the system (15). Assume that the considered rod is homogeneous and of constant cross-section.…”

Section: S a =mentioning

confidence: 99%

Finite element modeling of heat propagation of a complete rod of constant cross-section

Kenzhegulov¹,

Kenzhegulova²,

Alibiyev³

et al. 2022

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In this paper, the definition of the temperature distribution field for a rod made of heat-resistant alloy EI48 is introduced. The authors consider for the study a complete rod of circular cross-section of radius R, of limited length L. Studied body is under the influence of a heat flow q from the surface over the entire cross-sectional area of the left end, and heat exchange with the environment occurs on the cross-sectional area of the right end. The rod is thermally insulated along the side surface. The authors consider two cases: the first is the heat flow with intensity q can be set on the area of a small circle with radius r <R, the second is the heat flow can be set on its part, that is, on the area 2 2   R     . During the study, the authors showed that during the thermomechanical process, the strength of each section of the load-bearing structural elements is significantly influenced by the temperature distribution field. The influence of high temperature on the morphology of heat-resistant alloys is also shown. This leads to the fact that in some parts of the structural elements the temperature will be acceptable, and in some — critical. As a result, rapid wear of structural elements and loss of their physical qualities occur. Therefore, mathematical modeling of temperature distribution field for a body of various configurations is an urgent problem. The article presents a method for constructing a mathematical model and a corresponding computational algorithm that allows solving a class of problems to determine the regularities of the temperature distribution field in the elements of rod-shaped structures. To do this, the authors used the energy-variation principle in combination with the finite element method.

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Review on modeling and simulation of microstructure evolution during dynamic recrystallization using cellular automaton method

Zhu

Chen

Zhang

et al. 2019

Sci. China Technol. Sci.

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Analysis of dynamic recrystallization behaviors in resistance heating compressions of heat-resistant alloy by multi-field and multi-scale coupling method

Cited by 18 publications

References 19 publications

Influence of hot-core heavy reduction rolling on microstructure uniformity of casting billet

Influence of hot-core heavy reduction rolling on microstructure uniformity of casting billet

Finite element modeling of heat propagation of a complete rod of constant cross-section

Review on modeling and simulation of microstructure evolution during dynamic recrystallization using cellular automaton method

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