Mechanical properties of tungsten irradiated with high-energy protons and spallation neutrons
| Autor: | Jemila Habainy, Srinivasan Iyengar, Yong Dai, Yongjoong Lee |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Nuclear and High Energy Physics
High energy Materials science Three point flexural test chemistry.chemical_element 02 engineering and technology Tungsten 021001 nanoscience & nanotechnology 01 natural sciences 010305 fluids & plasmas Nuclear Energy and Engineering chemistry 0103 physical sciences Hardening (metallurgy) General Materials Science Neutron Spallation Irradiation Composite material 0210 nano-technology Spallation Neutron Source |
| Zdroj: | Journal of Nuclear Materials. 514:189-195 |
| ISSN: | 0022-3115 |
| Popis: | In this work, 3-point bending tests and micro-hardness measurements were performed on pure tungsten irradiated with high-energy protons and spallation neutrons in a target of the Swiss Spallation Neutron Source (SINQ). The specimens were irradiated to doses in the range of 1.3–3.5 dpa, with 37–140 appm He, at temperatures between 75 and 110 °C. During 3-point bending tests performed at temperatures up to 500 °C, all the irradiated specimens fractured in the elastic regime at stresses much below those for the unirradiated reference specimens. The micro-hardness measurements indicate significant irradiation induced hardening under all irradiation conditions. Observation of the fracture surfaces of tested irradiated specimens shows brittle fracture behaviour in general, whereas detailed features depend strongly on irradiation dose and test temperature. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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