Fracture behavior of reactor steel 20MnMoNi 55 in the transition temperature region
| Autor: | Branislav Djordjevic, Blagoj Petrovski, Drazan Kozak, Ivan Samardzic, Aleksandar Sedmak |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Transition temperature Fatigue testing Fracture mechanics 02 engineering and technology 021001 nanoscience & nanotechnology 020303 mechanical engineering & transports 0203 mechanical engineering Phase (matter) Fracture (geology) Cleavage (geology) J-integral transition temperature region ferritic steel cleavage fracture thickness dependance Composite material 0210 nano-technology Earth-Surface Processes Stress concentration |
| Popis: | The fracture represents the final phase of crack propagation, and the causes of their occurrence or partial crack propagation in the real constructions made of ferritic steels can be different. Along with cracks, influences such as stress concentration and low temperature contribute to fracture being “faster” and have an impact on the fracture mechanics parameters, as well as on the fact that fracture is more likely to occur due to cleavage. The parameters discussed in this study are Jc and rc (parameter, i.e. distance between fatigue crack tip and cleavage initiation site) by testing of C(T)50 specimen in the transition temperature region. Grooved C(T) specimens were made of reactor steel 20MnMoNi 55 with two thickness values, since an additional goal of this study was to present the influence of thickness of tested specimens. Along with it, other parameters that have influence on the understanding of transition temperature region and fracture in this region of ferritic steel are presented. |
| Databáze: | OpenAIRE |
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