Solute Clustering in As-irradiated and Post-irradiation-Annealed 304 Stainless Steel

  • Yimeng Chen
  • Yan Dong
  • Emmanuelle Marquis
  • Zhijie Jiao
  • Justin Hesterberg
  • Gary Was
  • Peter ChouEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)


A commercial purity 304SS was irradiated to 5 dpa Kinchin-Pease (10 dpa full-cascade) using 2 meV protons at 360 °C. Post-irradiation annealing (PIA) was applied to reduce or remove IASCC susceptibility. This paper focuses on the links between irradiation-induced hardening and irradiated microstructures of the as-irradiated and PIA conditions; the irradiated microstructure is assessed by transmission electron microscopy (TEM) and atom probe tomography (APT). Dislocation loops, Ni–Si clusters, and Cu-enriched clusters are present in the as-irradiated condition. When the dislocation loops are removed by PIA, ~40% of the as-irradiated hardness remains and can be rationally attributed to the solute clusters still present in the PIA microstructure. The observations indicate that hardening in the as-irradiated condition is controlled by both dislocation loops and solute clusters and suggest that radiation-induced solute clusters may be important to detailed understanding of IASCC (irradiation-assisted stress corrosion cracking).


IASCC Irradiated stainless steel Solute clusters Dislocation loops Hardness Atom probe tomography 



The work presented in this paper was funded by the Electric Power Research Institute.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Yimeng Chen
    • 1
    • 4
  • Yan Dong
    • 1
  • Emmanuelle Marquis
    • 1
  • Zhijie Jiao
    • 2
  • Justin Hesterberg
    • 2
  • Gary Was
    • 2
  • Peter Chou
    • 3
    Email author
  1. 1.Department of Materials Science and EngineeringUniversity of MichiganAnn ArborUSA
  2. 2.Department of Nuclear Engineering and Radiological SciencesUniversity of MichiganAnn ArborUSA
  3. 3.Electric Power Research InstitutePalo AltoUSA
  4. 4.CAMECA Instruments, IncMadisonUSA

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