1. Coarsening of MX Nitrides in Cr-Mo-N-X(X=V,Nb,Ti) Ferritic Steels
- Author
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Sang Min Song, Soon Hyo Chung, Suk Woo Hong, Kyung Sub Lee, Deuck Seung Bae, Kyung Tae Hong, and Woo Sang Jung
- Subjects
Ostwald ripening ,Austenite ,Materials science ,Metallurgy ,Blanket ,Nitride ,Condensed Matter Physics ,Atomic and Molecular Physics, and Optics ,symbols.namesake ,Particle-size distribution ,symbols ,medicine ,General Materials Science ,Irradiation ,Swelling ,medicine.symptom - Abstract
Ferritic steels have been candidate structural materials for first wall and blanket structures of fusion power plant since the late 1970’s, when the fast-reactor irradiation showed them to be more swelling resistant than austenitic stainless steels. In this investigation, the coarsening of MX nitrides during aging was studied for Cr-Mo-N-X(X=V, Nb, Ti) ferritic steels. During the aging, (V, Nb, Ti)nitrides were precipitated out. From TEM observation, particle size distribution was confirmed and size distribution follows a typical log-normal distribution. The coarsening rate of MX nitrides was correlated with the Oswald ripening equation.
- Published
- 2007
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