Diffusivity and Solubility of Cu in a Reactor Pressure Vessel Steel Studied by Atom Probe Tomography

• Shimodaira Masaki

  International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University

• Toyama Takeshi

  International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University

• Takahama Fumihiko

  International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University

• Ebisawa Naoki

  International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University

• Nozawa Yasuko

  International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University

• Shimizu Yasuo

  International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University

• Inoue Koji

  International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University

• Nagai Yasuyoshi

  International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University

Abstract

The diffusivity and solubility limit of Cu in A533B steel, which is used in reactor pressure vessels, were studied by atom probe tomography (APT). Cu-A533B steel diffusion couples were annealed at temperatures of 550, 600, and 700°C, and the resulting Cu concentration profiles were measured. For all annealing temperatures, the diffusivity of Cu in A533B steel were found to be 2–3 times higher than that in pure Fe, although the solubility limit of Cu was similar. APT was also used to study the effect of the grain boundary (GB) diffusion. The results indicated that no Cu segregation occurred at GB near the Cu/A533B steel interface, which may imply that GB diffusion of Cu was not effective in A533B steel.

Journal

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 55 (9), 1460-1463, 2014

  The Japan Institute of Metals and Materials

Keywords

• copper diffusion
• reactor pressure vessel steel
• diffusivity
• solubility limit
• grain boundary diffusion
• atom probe tomography

Details

• CRID: 1390001204253084544
• NII Article ID: 130004455371
• NII Book ID: AA1151294X
• DOI: 10.2320/matertrans.maw201410
• ISSN: 13475320
• ISSN: 13459678
• NDL BIB ID: 025747323
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025747323
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/55/9/55_MAW201410/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed