Tai Asayama

TL;DR: In order to examine irradiation effect on creep rupture strength of ODS steel claddings, the in-pile creep rupture test was conducted using Material Testing Rig with Temperature Control (MARICO)-2 in the experimental fast reactor JOYO.

TL;DR: In this paper, the temperature dependence of the formation and development of nano-size oxide particles and δ-ferrite using mechanically alloyed 9Cr-ODS raw powder was investigated applying X-ray Diffraction and Small Angle Xray Scattering measurement at SPring-8 and by Electron Probe Micro Analysis.

TL;DR: In this article, the effects of small amount of Al contamination (<0.1 wt%) on high-temperature strength and microstructure of the 9Cr-ODS steel were discussed.

TL;DR: In this article, the effects of chemical compositions on the microstructure and high-temperature creep strength of 9Cr-ODS steel was discussed in the light of quantitative data of δ-ferrite proportion and nano-size oxide particle dispersion, which were evaluated by dilatometric analysis and small angle neutron/X-ray scattering analysis, respectively.

TL;DR: In this article, a reassessment of creep-fatigue damage evaluation methods is presented, and points to be improved in the current methods employed in Subsection NH of the ASME BP either directly through inelastic analysis or indirectly through manipulation of elastic analyses.