Lee, Byeong-Joo Shim, Jae-Hyeok Kwon, Junhyun 2024-01-20T23:05:13Z 2024-01-20T23:05:13Z 2021-09-03 2008-06 1598-9623 https://pubs.kist.re.kr/handle/201004/133466 Atomistic Monte Carlo simulations based on modified embedded-atom method (MEAM) interatomic potentials have been carried out to clarify the differences in swelling rates between bcc and fcc Fe and between pure bcc Fe and bcc Fe-Cr alloys. Assuming that the transient regimes prior to the onset of steady-state swelling correspond to the void nucleation stage, the effect of crystallographic structure (bcc vs. fcc) or Cr alloying on the void nucleation rate under a given amount of supersaturated vacancies was examined. It was found that the void nucleation rate is much higher in fcc Fe than in bcc Fe. Randomly distributed Cr atoms slightly increase the void nucleation rate in bcc Fe, but microstructural evolutions such as the precipitation of Cr-rich phase have more decisive effects, serving as a vacancy sink. The reasons for the individual results are rationalized in terms of the binding energy of vacancy clusters and the size difference between Fe and Cr atoms. English KOREAN INST METALS MATERIALS CASCADE DAMAGE CONDITIONS PRODUCTION BIAS IRRADIATION METALS EVOLUTION ALLOYS SYSTEM MICROSTRUCTURE INJECTION DEFECT Effects of crystallographic structure and Cr on the rate of void nucleation in BCC Fe: An atomistic simulation study Article 10.3365/met.mat.2008.06.283 1 METALS AND MATERIALS INTERNATIONAL, v.14, no.3, pp.283 - 290 METALS AND MATERIALS INTERNATIONAL 14 3 283 290 scie scopus kci ART001250511 000257170700002 2-s2.0-47049116969 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article CASCADE DAMAGE CONDITIONS PRODUCTION BIAS IRRADIATION METALS EVOLUTION ALLOYS SYSTEM MICROSTRUCTURE INJECTION DEFECT Monte Carlo simulation modified embedded-atom method nucleation of void iron iron-chromium alloys