Simulation of the Effect of Hot Deformation on the Austenite Grain Size of Low-Alloyed Steels with Carbonitride Hardening
| Autor: | I. I. Gorbachev, A. Yu. Pasynkov, Vladimir V. Popov |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Austenite Materials science Precipitation (chemistry) Metallurgy Recrystallization (metallurgy) 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Grain size Condensed Matter::Materials Science Grain growth 0103 physical sciences Metallic materials Materials Chemistry Hardening (metallurgy) 0210 nano-technology Austenite grain |
| Zdroj: | Physics of Metals and Metallography. 119:551-557 |
| ISSN: | 1555-6190 0031-918X |
| DOI: | 10.1134/s0031918x18060078 |
| Popis: | A model that describes the evolution of the size of an austenite grain of low-alloyed steels under deformation within the temperature region of stable austenite has been proposed. The model describes both the change in the dislocation density under deformation with consideration for relaxation processes and the deformation-induced processes of the precipitation and evolution of carbonitride phases. The effect of an ensemble of carbonitride precipitates on grain growth kinetics is also taken into account. The model serves as a basis for creating a program used to perform the calculations for low-alloyed niobium-doped steel at different temperatures, deformation rates, and initial grain sizes. The obtained results have been compared with experimental data. |
| Databáze: | OpenAIRE |
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