The method of smooth particle hydrodynamics and the ANSYS AUTODYN software are used to reproduce the main phenomena accompanying high-velocity collision of plates fabricated from iron and copper of commercial purity. The maximum true strain of the surface layers is determined to attain ε = 5 or higher values. It is shown experimentally that defects with a length comparable to the thickness of the original plates do not form under welding by optimum modes. Growth in the strength properties is a factor promoting formation of bands of localized flow under rapid loading. Defects of this kind correspond to the behavior of positive feedback loops. The width of the bands arising under explosion welding of plates from a two-phase (α + β) titanium alloy VT23 ranges from units to tens of micrometers.
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The work has been performed in accordance with the Federal Assignment of the Ministry of Education and Science of the Russian Federation (project FSUN-2020-0014(2019-0931)) “Investigation of Metastable Structures Formed on Surfaces and Interfaces of Materials under Extreme External Impact.”
The studies have been conducted using the equipment of the common access center “Structure, Mechanical and Physical Properties of Materials” of the Novosibirsk State Technical University.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 41 – 47, December, 2021.
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Ryabinkina, P.A., Emurlaeva, Y.Y., Bataev, I.A. et al. Inhomogeneity of Plastic Flow Accompanying Rapid Loading of Metallic Materials. Met Sci Heat Treat 63, 674–680 (2022). https://doi.org/10.1007/s11041-022-00747-4
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DOI: https://doi.org/10.1007/s11041-022-00747-4