Computer simulations of interstitial loop growth kinetics in irradiated bcc Fe

Yulan Li, Shenyang Hu, Charles H. Henager, Huiqiu Deng, Fei Gao, Xin Sun, Moe A. Khaleel

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The growth kinetics of (0 0 1) [0 0 1] interstitial loops in bcc Fe is studied by phase-field modeling. The effect of defect (vacancy/interstitial) concentration, generation, recombination, sink strength, and elastic interaction on the growth kinetics of interstitial loops is systematically simulated. Results show that the elastic interaction between the defects and interstitial loops speeds up the growth kinetics and affects the morphology of the interstitial loops. Linear growth rate, i.e., the loop average radius is linear to time, under both aging and irradiation are predicted, which is in agreement with experimental observation. The results also show that the interstitial loop growth rate, which is directly related to the sink strength of the interstitial loop for interstitials, increases linearly with the initial interstitial concentration during aging while changing logarithmically with the interstitial generation rate under irradiation.

Original languageEnglish
Pages (from-to)259-267
Number of pages9
JournalJournal of Nuclear Materials
Volume427
Issue number1-3
DOIs
Publication statusPublished - 1 Aug 2012
Externally publishedYes

Fingerprint

Growth kinetics
interstitials
computerized simulation
Computer simulation
kinetics
Aging of materials
Irradiation
Defects
Vacancies
sinks
irradiation
defects
interactions
radii

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cite this

Li, Y., Hu, S., Henager, C. H., Deng, H., Gao, F., Sun, X., & Khaleel, M. A. (2012). Computer simulations of interstitial loop growth kinetics in irradiated bcc Fe. Journal of Nuclear Materials, 427(1-3), 259-267. https://doi.org/10.1016/j.jnucmat.2012.05.004

Computer simulations of interstitial loop growth kinetics in irradiated bcc Fe. / Li, Yulan; Hu, Shenyang; Henager, Charles H.; Deng, Huiqiu; Gao, Fei; Sun, Xin; Khaleel, Moe A.

In: Journal of Nuclear Materials, Vol. 427, No. 1-3, 01.08.2012, p. 259-267.

Research output: Contribution to journalArticle

Li, Y, Hu, S, Henager, CH, Deng, H, Gao, F, Sun, X & Khaleel, MA 2012, 'Computer simulations of interstitial loop growth kinetics in irradiated bcc Fe', Journal of Nuclear Materials, vol. 427, no. 1-3, pp. 259-267. https://doi.org/10.1016/j.jnucmat.2012.05.004
Li, Yulan ; Hu, Shenyang ; Henager, Charles H. ; Deng, Huiqiu ; Gao, Fei ; Sun, Xin ; Khaleel, Moe A. / Computer simulations of interstitial loop growth kinetics in irradiated bcc Fe. In: Journal of Nuclear Materials. 2012 ; Vol. 427, No. 1-3. pp. 259-267.
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