高クロム鋼の微細構造変化に与える熱時効と電子線照射の影響に関する基礎的研究
Effect of Thermal Aging and Electron Irradiation on Microstructure Changes of High Chromium Steels
著者:
鬼塚 貴志 福元 謙一 （福井大） 佐藤 紘一 （鹿児島大） Qui XU 薮内 敦 木野村 淳 （京都大）
発刊日:
公開日:
Electron IrradiationHigh Chromium SteelsPhase DecompositionPositron Annihilation SpectroscopyThermal Aging
概要
The phase decomposition behaviour of an experimental High-chromium Ferritic steel containing 40 wt.% chromium (Fe-40Cr) irradiated with 8 MeV electrons was studied by positron annihilation lifetime (PAL) measurements and coincidence Doppler broadening (CDB) of positron annihilation radiation measurements. Electron irradiation at 100 and at 475 ?C were performed on the specimens to nominally 0.03 to 0.3X10-3 dpa. The rapid increase of W-parameter obtained from the specimen irradiated at 100 ?C is most likely caused by the microstructure change by phase decomposition evolution, however the data by W-parameter varies widely due to the presence of vacancies. On the other hand, the result of the specimen irradiated at 475 ?C shows no irradiation effect.
