Naoyuki Hashimoto

TL;DR: TEM examinations and swelling measurements were performed on commercially available wrought Low Carbon Arc Cast (LCAC), La-oxide Oxide Dispersion Strengthened (ODS), and TZM molybdenum alloys following irradiation in the High Flux Isotope Reactor (HFIR) at 300, 600, and 900,°C to neutron fluences between 1.05 and 24.1 dpa as discussed by the authors.

TL;DR: In this paper, the authors evaluate the hydrogen effect on coupled evolution of dislocation velocity and mobile dislocation density in Fe-based alloys, thermal activation parameters and dislocation structures were obtained using repeated stress relaxation tests on pure iron, Fe-8Cr alloy and F82H steel.

TL;DR: In this paper, the deformation microstructure of polycrystalline molybdenum was characterized by room-temperature electrical resistivity measurements, transmission electron microscopy (TEM) and positron annihilation spectroscopy (PAS).

TL;DR: In this paper, a review on the radiation effects on the deformation of metallic materials, focusing on microscopic and macroscopic strain localization phenomena was provided, and it was shown that the plastic instability stress and true fracture stress are nearly independent of irradiation dose if there is no radiation-induced phase change or embrittlement.

TL;DR: The radiation-hardening of oxide dispersion strengthened (ODS) alloys was examined using ion irradiation and nano-indentation in this article, where three ODS steels were irradiated in the TIARA facility at JAEA with 10.5 MeV Fe 3+ ions up to a dose of 20dpa at 250 and 380°C.