Yoshiharu Murase

TL;DR: In this paper, the bubble size distributions in helium-implanted and creep-ruptured FeNi-Cr materials have been analyzed from the standpoint of bubble stability, and it was found from calculations estimating the helium atom number in individual bubbles that the increase of helium retention in the inside of grains would reduce helium embrittlement to some extent.

TL;DR: In this article, the authors examined the effect of high temperature helium embrittlement on reduced activation ferritic/martensitic steels through creep rupture testing after hot helium implantation at a cyclotron, so as to procure knowledge beneficial for determination on the upper limit temperature of the materials of this kind in first wall/blanket structural application.

TL;DR: In this article, the fracture surface topography analysis (FRASTA) was adopted to extract the information of plastic deformation at the crack tip for the in-beam, post-irradiation and unirradiated specimens.

TL;DR: Load-controlled fatigue tests in the mode of tension-tension were performed for the side-notched 20% cold-worked 316 stainless steel under in situ irradiation and following irradiation with 17 MeV protons at 60 °C as mentioned in this paper.

TL;DR: In this article, computer calculations for the 20% cold-worked SUS 316 demonstrated the transient nature of this radiation-induced creep, caused by the overwhelming flux of excess interstitial atoms lasting nearly one year at 60°C where the diffusivity of vacancies is very low.