Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Dang-Moon Wee"'
Publikováno v:
Journal of the Korean Society for Heat Treatment. 28:82-86
Publikováno v:
Materials Science and Engineering: A. 529:156-163
SA508 Gr.4N Ni–Cr–Mo low alloy steel, in which Ni and Cr contents are higher than in commercial reactor pressure vessel (RPV) steels, may be a candidate RPV material with the improved strength and toughness due to its tempered martensitic microst
Publikováno v:
Applied Catalysis A: General. 398:161-167
A two-step pretreatment, oxidation in air followed by reduction in hydrogen, was performed on Ni3Al foils to improve the catalytic activity for methanol decomposition. A two-layer structure, Ni/Al2O3, was formed over the foil surface which was oxidiz
Publikováno v:
Journal of Nuclear Materials. 407:126-135
SA508 Gr.4N Ni–Mo–Cr low alloy steel has improved fracture toughness and strength compared to commercial low alloy steels such as SA508 Gr.3 Mn–Mo–Ni low alloy steel, which has less than 1% Ni. Higher strength and fracture toughness of low al
Publikováno v:
Corrosion Science. 52:3820-3825
Selective dissolution of Ni(γ) in a binary Ni(γ)/Ni 3 Al(γ′) two-phase alloy was performed in an aqueous electrolyte including 1 wt.% (NH 4 ) 2 SO 4 and 1 wt.% citric acid to obtain a rough, γ′-terminated surface. The electrochemical potentia
Publikováno v:
Journal of Nuclear Materials. 403:68-74
The fracture toughness properties of the tempered martensitic SA508 Gr.4N Ni–Mo–Cr low alloy steel for reactor pressure vessels were investigated by using the master curve concept. These results were compared to those of the bainitic SA508 Gr.3 M
Publikováno v:
Materials Science and Engineering: A. 527:3329-3334
This study aims at assessing the fracture toughness behavior of tempered martensitic Ni–Mo–Cr low alloy steels for reactor pressure vessels in a transition temperature region using a master curve approach. The fracture toughness tests for model a
Autor:
Jun Hyuk Jang, Toshiyuki Hirano, Shigenori Ueda, Ya Xu, Keisuke Kobayashi, Dang-Moon Wee, Hideki Yoshikawa, Masahiko Demura, Yoshiyuki Yamashita
Publikováno v:
The Journal of Physical Chemistry C. 114:6047-6053
We had, in a previous study, found that flat cold-rolled Ni3Al foil is spontaneously activated during the initial stage of catalytic methanol decomposition, and further, this is accompanied by the gradual formation of fine Ni particles. In this study
Publikováno v:
Korean Journal of Metals and Materials. 48:122-132
Higher strength and fracture toughness of reactor pressure vessel steels can be obtained by changing the material specification from that of Mn-Mo-Ni low alloy steel (SA508 Gr.3) to Ni-Mo-Cr low alloy steel (SA508 Gr.4N). However, the operation tempe
Publikováno v:
Catalysis Letters. 134:258-263
Cold-rolled Ni3Al foils were found to be spontaneously activated up to a high level during methanol decomposition, forming Ni particles on the foil surface. Utilizing this characteristic phenomenon, we pre-activated the Ni3Al foils and subsequently e