Molecular Dynamics Study of the Deformation Processes of Metallic Materials in Structural and Phase (Martensitic) Transformations
| Autor: | Natalia N. Kuranova, A. V. Pushin, V. G. Pushin, Yu. A. Baimova, Radik R. Mulyukov, Sergey V. Dmitriev |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Non-equilibrium thermodynamics 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Condensed Matter::Materials Science Molecular dynamics Thermoelastic damping Martensite Diffusionless transformation Phase (matter) 0103 physical sciences Materials Chemistry Grain boundary Deformation (engineering) 0210 nano-technology |
| Zdroj: | Physics of Metals and Metallography. 119:589-597 |
| ISSN: | 1555-6190 0031-918X |
| DOI: | 10.1134/s0031918x18060042 |
| Popis: | The application of the method of molecular dynamics based on the use of pair interatomic potentials has been discussed to study various deformation processes during structural and phase (martensitic) transformations in metallic single and polycrystals. It has been shown that the method of molecular dynamics in a two-dimensional model makes it possible to qualitatively analyze the processes of grain-boundary sliding and other mechanisms of plastic deformation in polycrystals. It is also an efficient tool for describing diffusionless martensitic transformations in metallic materials. As an example, the use of the method for simulating grain-boundary sliding in a polycrystal with nonequilibrium grain boundaries is presented and the mechanisms of overcoming an obstruction in the form of a protruding segment of a grain have been demonstrated at the atomic level. The application of this method for describing the dynamics and morphology of the thermoelastic martensitic transformation has been illustrated by the example of the titanium nickelide and manganese alloys. |
| Databáze: | OpenAIRE |
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