Physical Simulations of the Controlled Rolling Process of Plate X100 with Accelerated Cooling

Knapiński, M.; Dyja, H.; Kawałek, A.; Kwapisz, M.; Koczurkiewicz, B.

doi:10.4028/www.scientific.net/ssp.199.484

Cited by 9 publications

(10 citation statements)

References 7 publications

(10 reference statements)

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“…Such a structure should provide an increase in operational properties, in particular, radiation resistance [ 12 , 13 , 14 , 15 ]. The resulting microstructure is in good agreement with the research data [ 6 , 7 , 18 , 19 , 20 , 23 , 24 ].…”

Section: Discussionsupporting

confidence: 88%

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Using of Radial-Shear Rolling to Improve the Structure and Radiation Resistance of Zirconium-Based Alloys

et al. 2020

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An overview of the prospects for the development of nuclear technologies and the conclusion of the relevant requirements for advanced structural materials, their classification and features were performed. In order to obtain a bar with a modified radiation-resistant outer layer, an experiment of radial-shear rolling under the most stringent conditions was carried out. For the same conditions, a FEM-simulation of sequential rolling in eight passes with a total compression of 70.7% (from a diameter of 37 mm to 20 mm) was conducted. For adequate simulation results a new material database for Zr-1%Nb alloy using plastometry investigations was generated. An experimental obtaining of a gradient-modified structure with an ultrafine-grained (UFG) periphery and an elongated rolling texture in the center of the bar was performed.

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Section: Discussionsupporting

confidence: 88%

“…The most popular methods that implement these conditions are equal channel angular pressing (ECAP) in 6–8 cycles or more [ 11 ] and high-pressure torsion (HPT), as the evolution of Bridgman anvil [ 8 ]. In addition, SPD methods based on rolling have been developed [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Using of Radial-Shear Rolling to Improve the Structure and Radiation Resistance of Zirconium-Based Alloys

et al. 2020

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“…During analysis of the plastic flow curves, a problem arises from the uncontrolled temperature increase of the sample resulting from strain occurring especially at strain rates higher than 5 s −1 . The mathematical description of the plastic flow curves using Equation (1) makes it possible to introduce a temperature correction [ 19 , 20 , 21 ]:

where: ε—stres,

—strain rate Q—activation energy, R—gas constant, T—temperature, n—material constant.…”

Section: Resultsmentioning

confidence: 99%

Shaping Microstructure and Mechanical Properties of High-Carbon Bainitic Steel in Hot-Rolling and Long-Term Low-Temperature Annealing

Dembiczak

Knapiński

2021

Materials

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Based on the research results, coefficients in constitutive equations, describing the kinetics of dynamic, meta-dynamic, and static recrystallization in high-carbon bainitic steel during hot deformation were determined. The developed mathematical model takes into account the dependence of the changing kinetics in the structural size of the preliminary austenite grains, the value of strain, strain rate, temperature, and time. Physical simulations were carried out on rectangular specimens. Compression tests with a flat state of deformation were carried out using a Gleeble 3800. Based on dilatometric studies, coefficients were determined in constitutive equations, describing the grain growth of the austenite of high-carbon bainite steel under isothermal annealing conditions. The aim of the research was to verify the developed mathematical models in semi-industrial conditions during the hot-rolling process of high-carbon bainite steel. Analysis of the semi-industrial studies of the hot-rolling and long-term annealing process confirmed the correctness of the predicted mathematical models describing the microstructure evolution.

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“…In the paper, the rheological properties of the AZ91 magnesium alloy were determined based on compression tests conducted with a Gleeble 3800 simulator (Dynamic System Inc., Poestenkill, NY, USA) for metallurgical processes, which is owned by the Department of Plastic Working and Safety Engineering of the Częstochowa University of Technology [ 23 ]. The Gleeble 3800 simulator enables testing over a wide temperature range, corresponding to the actual conditions within an analysed process.…”

Section: Determining Rheological Properties Of a Selected Magnesiumentioning

confidence: 99%

Analysis of the Open Die Forging Process of the AZ91 Magnesium Alloy

et al. 2020

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The paper presents the results of numerical modelling of the forging process of magnesium alloy ingots on a hydraulic press with the use of flat and shaped anvils. The use of shaped (rhombic-trapezoid) anvils will affect the uniform distribution of temperature and strain intensity in the entire volume of the forging, causing a number of forging passes, which in consequence will reduce the costs of the blank manufacturing process. However, higher values of the strain intensity were obtained during the deformation of the material in flat anvils. The purpose of the research was to propose assumptions for forging technology of producing a blank from AZ91 alloy with the use of flat and shaped anvils. Numerical examination for AZ91 magnesium alloy was carried out using the Forge®NxT commercial software. The rheological properties of the investigated alloy were determined on the basis of uniaxial compression tests carried out in the Gleeble 3800 metallurgical simulation system. The numerical analysis of the process of forging AZ91 alloy ingots on a press was conducted in the temperature range of 200–400 °C and at several forging passes.

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Physical Simulations of the Controlled Rolling Process of Plate X100 with Accelerated Cooling

Cited by 9 publications

References 7 publications

Using of Radial-Shear Rolling to Improve the Structure and Radiation Resistance of Zirconium-Based Alloys

Using of Radial-Shear Rolling to Improve the Structure and Radiation Resistance of Zirconium-Based Alloys

Shaping Microstructure and Mechanical Properties of High-Carbon Bainitic Steel in Hot-Rolling and Long-Term Low-Temperature Annealing

Analysis of the Open Die Forging Process of the AZ91 Magnesium Alloy

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