Strength of dense ceramics is basically determined by the defects near surface, while the damage introduced -y the ion irradiation is also limited to the near surface. The purpose of this study is to establish the simple valuation method of irradiation effect on mechanical property for ceramics by mean of flexural test after on irradiation instead of neutron irradiation. Flexural strength of CVD-SiC following ion irradiation ncreased in all condition, although the strength and Weibull modulus decreas ed wi...
英字タイトル:
Evaluation of Ion Irradiation Effect on Mechanical Properties of Ceramics

To verify the effect of hardened surface on stress corrosion cracking (SCC) of 316L, characteristics of cracked BWR core shroud have been investigated by means of microstructures. At the inner surface of core shroud where grinding was done, fine grains were observed at the surface thin layer. Furthermore, deformation-induced slip-line field including extensive deformation-twins was observed in the harden ed surface region. In contact with corrosion products on the shroud surface, intensive Ni enrichment a...
英字タイトル:
Microstructural Analyses of hardened surface in BWR core shroud made of 316L