Phenomena of Adiabatic Shear Bands Forming of Structural Steels Under Impact Load Conditions
| Autor: | Lech Starczewski, Michał Gmitrzuk |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science T55-55.3 adiabatic shear bands 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology 01 natural sciences Adiabatic shear band dynamic deformation Industrial safety. Industrial accident prevention 0103 physical sciences 40hm steel 04j steel 0210 nano-technology Safety Risk Reliability and Quality |
| Zdroj: | Journal of KONBiN, Vol 50, Iss 2, Pp 315-337 (2020) |
| ISSN: | 2083-4608 |
| DOI: | 10.2478/jok-2020-0042 |
| Popis: | The paper presents the results of an experimental study on adiabatic shear bands (ASB) in two grades of steel with three different microstructures. Samples were subjected to impact forces in order to obtain a targeted shear band. The process of deforming the samples was carried out with a bar impact rod moving at high speeds in the range of 1.4 m/s to 16.5 m/s was carried out. Microstructural studies of deformed samples were performed using the Electron Backscatter Diffraction (EBSD) method. The results of the experiments show that the ASB type depends on the initial microstructure of the material and the deformation speed. It has been shown that, depending on the type of microstructure, ASBs are characterized by a different mechanism of formation and show different character. |
| Databáze: | OpenAIRE |
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