One-dimensional migration of interstitial clusters in SUS316L and its model alloys under electron irradiation

Y. Satoh, H. Abe, S. W. Kim

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The one-dimensional (1D) migration of interstitial clusters in austenitic stainless steel SUS316L and its model alloys, namely, Fe-18Cr-13Ni, Fe-18Cr-13Ni-0.012C, and Fe-18Cr-13Ni-1.7Mn (mass %), was examined using in situ observation by high-voltage electron microscopy. Such 1D migration was confirmed to occur along the 110 direction at irregular intervals in all these alloys under 1250-kV electron irradiation at room temperature. The frequency of 1D migration was found proportional to electron beam intensity, and was about 1/10 that in high-purity iron under the same irradiation intensity. The distance of 1D migration in the four alloys was less than 10nm, which was much shorter than that in high-purity iron. No clear difference in the frequency or distance of 1D migration was observed among the four alloys, suggesting that minor solute/impurity elements have no apparent effect on 1D migration in SUS316L.

Original languageEnglish
Pages (from-to)1129-1148
Number of pages20
JournalPhilosophical Magazine
Volume92
Issue number9
DOIs
Publication statusPublished - 2012 Mar 21

Keywords

  • TEM
  • electron irradiation
  • irradiation effects
  • point defects

ASJC Scopus subject areas

  • Condensed Matter Physics

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