Mechanical and Microstructural Aspects of Localized Plastic Flow

Mikhail Sokovikov; Vasiliy Chudinov; Dmitry Bilalov; Vladimir Oborin; Sergey Uvarov; Oleg Plekhov; Yuriy Bayandin; Oleg Naimark

doi:10.4028/www.scientific.net/SSP.243.113

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Mechanical and Microstructural Aspects of Localized Plastic Flow
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Mechanical and Microstructural Aspects of Localized Plastic Flow

Abstract:

The behavior of specimens dynamically loaded during the split Hopkinson (Kolsky) bar tests in a regime close to simple shear conditions was studied. The lateral surface of the specimens was investigated in-situ using a high-speed infra-red camera CEDIP Silver 450M. The temperature field distribution obtained at different time allowed one to trace the evolution of plastic strain localization. The process of target perforation involving plug formation and ejection was examined using a high-speed infra-red camera and a VISAR velocity measurement system. The microstructure of tested specimens was analyzed using an optical interferometer-profiler and a scanning electron microscope. The development of plastic shear instability regions has been simulated numerically.

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Periodical:

Solid State Phenomena (Volume 243)

Pages:

113-120

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.243.113

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Online since:

October 2015

Authors:

Mikhail Sokovikov*, Vasiliy Chudinov, Dmitry Bilalov, Vladimir Oborin, Sergey Uvarov, Oleg Plekhov, Yuriy Bayandin, Oleg Naimark

Keywords:

High-Velocity Perforation, Instability, Localization of Plastic Strain, Micro-Shears, Non-Equilibrium Transitions

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