Evaluation of Quasi-Static and Dynamic Fracture Toughness on the Low-Alloy Reactor Pressure Vessel Steel JRQ in the Transition Region
| Autor: | Hans Peter Seifert, Veronika Mazánová, Philippe Spätig, S. Suman |
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| Rok vydání: | 2019 |
| Předmět: |
Imagination
Master-Curve Method Chemical substance Materials science media_common.quotation_subject Alloy Reactor Pressure Vessel Steels 02 engineering and technology engineering.material 01 natural sciences Search engine Fracture toughness 0103 physical sciences General Materials Science Constraint Loss Dynamic Fracture Toughness Composite material Reactor pressure vessel media_common 010302 applied physics Thesaurus (information retrieval) Mechanical Engineering 021001 nanoscience & nanotechnology Quasi-Static Fracture Toughness Mechanics of Materials engineering 0210 nano-technology Quasistatic process |
| Zdroj: | Key Engineering Materials. 827:294-299 |
| ISSN: | 1662-9795 |
| Popis: | Three point bending and impact tests with sub-sized Charpy specimens were performed on the JRQ reference steel for reactor pressure vessels. Quasi-static and dynamic fracture toughness data were calculated and the fracture behavior in the ductile to brittle transition region was evaluated within the frame of the master curve method (ASTM E1921). Specimens with shallow and deep cracks were studied and the respective influence of crack length and loading rate on the reference transition temperature was determined. The force-time curves of specimens with shallow cracks presented significantly smaller oscillations with respect to the absolute force, making the fracture toughness evaluation more accurate. |
| Databáze: | OpenAIRE |
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