|
|||||
|
|
Study of radiation-induced degradation of RPV steels and model alloys by positron annihilation and Mössbauer spectroscopy |
|
| Authors: | Andrej Zeman, Luigi Debarberis, L&#x udoví t Kup a, Beatriz Acosta, Milo&#x Kytka,Jarmila Degmov |
| Affiliation: | aEuropean Commission, Joint Research Centre, Institute for Energy, P.O. Box 2, 1755ZG Petten, The Netherlands bVÚJE plc., Okružná 5, 918 64 Trnava, Slovakia cNuclear Research Institute Řež plc., Husinec – Řež 130, 250 68 Řež, Czech Republic dDepartment of Nuclear Physics and Technology, Slovak University of Technology, Ilkovičova 3, 81219 Bratislava, Slovakia |
| Abstract: | The influence of different microstructural processes on the degradation due to radiation embrittlement has studied by positron annihilation and Mössbauer spectroscopy. The materials studied consisted of WWER-440 base (15Kh2MFA) and weld (10KhMFT) RPV steels which were neutron-irradiated at fluence levels of 0.78 × 1024 m−2, 1.47 × 1024 m−2 and 2.54 × 1024 m−2; WWER-1000 base (15Kh2NMFAA) and weld (12Kh2N2MAA) irradiated at a fluence level 1.12 × 1024 m−2; three different model alloys implanted with protons at two dose levels (up to 0.026 dpa), finally the base metal of WWER-1000 (15Kh2NMFAA) was thermally treated with the intention to simulate the P-segregation process. It has been shown possible to correlate the values of parameters obtained by such techniques and data of mechanical testing (ductile-to-brittle transition temperature and upper shelf energy). |
| Keywords: | M0300 P0900 P1200 R0200 |
| 本文献已被 ScienceDirect 等数据库收录！ | |