Mathematical Modeling of the Concentrated Energy Flow Effect on Metallic Materials
Numerous processes take place in materials under the action of concentrated energy flows. The most important ones include heating together with the temperature misdistribution throughout the depth, probable vaporization on the surface layer, melting to a definite depth, and hydrodynamic flotation; g...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-12-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/7/1/4 |
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| author | Sergey Konovalov Xizhang Chen Vladimir Sarychev Sergey Nevskii Victor Gromov Milan Trtica |
| author_facet | Sergey Konovalov Xizhang Chen Vladimir Sarychev Sergey Nevskii Victor Gromov Milan Trtica |
| author_sort | Sergey Konovalov |
| collection | DOAJ |
| description | Numerous processes take place in materials under the action of concentrated energy flows. The most important ones include heating together with the temperature misdistribution throughout the depth, probable vaporization on the surface layer, melting to a definite depth, and hydrodynamic flotation; generation of thermo-elastic waves; dissolution of heterogeneous matrix particles; and formation of nanolayers. The heat-based model is presented in an enthalpy statement involving changes in the boundary conditions, which makes it possible to consider melting and vaporization on the material surface. As a result, a linear dependence of penetration depth vs. energy density has been derived. The model of thermo-elastic wave generation is based on the system of equations on the uncoupled one-dimensional problem of dynamic thermo-elasticity for a layer with the finite thickness. This problem was solved analytically by the symbolic method. It has been revealed for the first time that the generated stress pulse comprises tension and compression zones, which are caused by increases and decreases in temperature on the boundary. The dissolution of alloying elements is modeled on the example of a titanium-carbon system in the process of electron beam action. The mathematical model is proposed to describe it, and a procedure is suggested to solve the problem of carbon distribution in titanium carbide and liquid titanium-carbide solution in terms of the state diagram and temperature changes caused by phase transitions. Carbon concentration vs. spatial values were calculated for various points of time at diverse initial temperatures of the cell. The dependence of carbon particle dissolution on initial temperature and radius of the particle were derived. A hydrodynamic model based on the evolution of Kelvin-Helmholtz instability in shear viscous flows has been proposed to specify the formation of nanostructures in materials subjected to the action of concentrated energy flows. It has been pointed out for the first time that, for certain parameters of the problem, that there are two micro- and nanoscale peaks in the relation of the decrement to the wavelength of the interface disturbance. |
| first_indexed | 2024-12-11T03:31:01Z |
| format | Article |
| id | doaj.art-fc6c978fc7bf4b11ba08d4e28b2fbb4a |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-11T03:31:01Z |
| publishDate | 2016-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-fc6c978fc7bf4b11ba08d4e28b2fbb4a2022-12-22T01:22:23ZengMDPI AGMetals2075-47012016-12-0171410.3390/met7010004met7010004Mathematical Modeling of the Concentrated Energy Flow Effect on Metallic MaterialsSergey Konovalov0Xizhang Chen1Vladimir Sarychev2Sergey Nevskii3Victor Gromov4Milan Trtica5Physics Department, Siberian State Industrial University, 42 Kirova str., Novokuznetsk 654007, RussiaSchool of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaPhysics Department, Siberian State Industrial University, 42 Kirova str., Novokuznetsk 654007, RussiaPhysics Department, Siberian State Industrial University, 42 Kirova str., Novokuznetsk 654007, RussiaPhysics Department, Siberian State Industrial University, 42 Kirova str., Novokuznetsk 654007, RussiaSchool of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325035, ChinaNumerous processes take place in materials under the action of concentrated energy flows. The most important ones include heating together with the temperature misdistribution throughout the depth, probable vaporization on the surface layer, melting to a definite depth, and hydrodynamic flotation; generation of thermo-elastic waves; dissolution of heterogeneous matrix particles; and formation of nanolayers. The heat-based model is presented in an enthalpy statement involving changes in the boundary conditions, which makes it possible to consider melting and vaporization on the material surface. As a result, a linear dependence of penetration depth vs. energy density has been derived. The model of thermo-elastic wave generation is based on the system of equations on the uncoupled one-dimensional problem of dynamic thermo-elasticity for a layer with the finite thickness. This problem was solved analytically by the symbolic method. It has been revealed for the first time that the generated stress pulse comprises tension and compression zones, which are caused by increases and decreases in temperature on the boundary. The dissolution of alloying elements is modeled on the example of a titanium-carbon system in the process of electron beam action. The mathematical model is proposed to describe it, and a procedure is suggested to solve the problem of carbon distribution in titanium carbide and liquid titanium-carbide solution in terms of the state diagram and temperature changes caused by phase transitions. Carbon concentration vs. spatial values were calculated for various points of time at diverse initial temperatures of the cell. The dependence of carbon particle dissolution on initial temperature and radius of the particle were derived. A hydrodynamic model based on the evolution of Kelvin-Helmholtz instability in shear viscous flows has been proposed to specify the formation of nanostructures in materials subjected to the action of concentrated energy flows. It has been pointed out for the first time that, for certain parameters of the problem, that there are two micro- and nanoscale peaks in the relation of the decrement to the wavelength of the interface disturbance.http://www.mdpi.com/2075-4701/7/1/4electron-beam treatmentKelvin-Helmholtz instabilitythermoelastic wavesnanostructures |
| spellingShingle | Sergey Konovalov Xizhang Chen Vladimir Sarychev Sergey Nevskii Victor Gromov Milan Trtica Mathematical Modeling of the Concentrated Energy Flow Effect on Metallic Materials Metals electron-beam treatment Kelvin-Helmholtz instability thermoelastic waves nanostructures |
| title | Mathematical Modeling of the Concentrated Energy Flow Effect on Metallic Materials |
| title_full | Mathematical Modeling of the Concentrated Energy Flow Effect on Metallic Materials |
| title_fullStr | Mathematical Modeling of the Concentrated Energy Flow Effect on Metallic Materials |
| title_full_unstemmed | Mathematical Modeling of the Concentrated Energy Flow Effect on Metallic Materials |
| title_short | Mathematical Modeling of the Concentrated Energy Flow Effect on Metallic Materials |
| title_sort | mathematical modeling of the concentrated energy flow effect on metallic materials |
| topic | electron-beam treatment Kelvin-Helmholtz instability thermoelastic waves nanostructures |
| url | http://www.mdpi.com/2075-4701/7/1/4 |
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