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South Korea looks to Southern and NuScale
This week, the United States and South Korea have taken two steps toward deepening their nuclear partnership through two notable announcements. First, the majority-state owned Korea Hydro & Nuclear Power signed a memorandum of understanding with Birmingham, Ala.–based Southern Nuclear.
R. A. Renzetti, H. R. Z. Sandim, A. F. Padilha, D. Raabe, R. Lindau, A. Möslang
Fusion Science and Technology | Volume 60 | Number 1 | July 2011 | Pages 22-26
doi.org/10.13182/FST11-A12400
Articles are hosted by Taylor and Francis Online.
Oxide dispersion strengthened (ODS) ferritic/martensitic (FM) steels are promising candidates for structural applications in future fusion power reactors. In order to evaluate the thermal stability of 80% cold-rolled ODS-EUROFER, samples were annealed for 1 h at temperatures up to about 0.9 Tm, where Tm is the absolute melting point. The characterization of the annealed samples was performed using transmission electron microscopy and electron backscatter diffraction. Results show that static recovery is the main softening mechanism of this steel when annealed below 800°C. The volume fraction of recrystallized grains is quite small (below 0.10). Above 900°C, martensitic transformation takes place causing pronounced hardening. Large M23C6 particles are found at the grain boundaries after tempering at 750°C for 2 h.
