Structural Turbulence of Plastic Flow and Ductile Fracture in Low-Alloy Steel under Lattice Curvature Conditions
| Autor: | N. K. Galchenko, V. E. Panin, Ilya Vlasov, A. R. Shugurov, V. E. Egorushkin, Ye. Ye. Deryugin, P. V. Kuznetsov |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Mesoscopic physics Toughness Materials science Solid-state physics Turbulence Alloy steel 02 engineering and technology Surfaces and Interfaces engineering.material Plasticity Condensed Matter Physics Curvature 01 natural sciences 020303 mechanical engineering & transports Fracture toughness 0203 mechanical engineering Mechanics of Materials 0103 physical sciences engineering General Materials Science Composite material |
| Zdroj: | Physical Mesomechanics. 23:279-290 |
| ISSN: | 1990-5424 1029-9599 |
| DOI: | 10.1134/s1029959920040013 |
| Popis: | The possibility of the structural turbulence of plastic flow and ductile fracture in low-carbon and low-alloy steel 09Mn2Si is shown by fracture toughness measurements and uniaxial tension of chevron-notched specimens at 20°C. The conditions for the structural turbulence of plastic deformation of solids are determined which provide high fracture toughness. The decisive functional role is played by the lattice curvature, the appearance of mesoscopic structural states in the lattice interstices at the nanoscale, the activation of self-consistent rotational motion in the hierarchy of mesoscopic structural levels, the presence of free volume, and the possibility of structural transformations at the nanoscale. A nonlinear theory of describing structural turbulence in a deformable solid is discussed. |
| Databáze: | OpenAIRE |
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