Proton irradiation and characterization of additively manufactured 304L stainless steels

B. P. Eftink, J. S. Weaver, J. A. Valdez, V. Livescu, D. Chen, Y. Wang, C. Knapp, N. A. Mara, S. A. Maloy, G. T. Gray

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


Irradiations were performed with 1.5 MeV protons to 0.6 dpa at 40–150 °C on additively manufactured (AM) 304L stainless steel and the changes in microstructure and mechanical behavior after irradiation were compared to wrought 304L stainless steel. All microstructural and hardness results after irradiation suggest the samples evolve toward a similar state, despite significant differences in the unirradiated microstructures and hardness values. A TEM and nanoindentation-based investigation of before and after proton irradiation at 40–150 °C is presented. Results are interpreted in terms of initial dislocation content, dislocation structures, and microstructural and chemical homogeneity.

Original languageEnglish (US)
Article number152007
JournalJournal of Nuclear Materials
StatePublished - Apr 1 2020

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© 2020


  • Additive manufacturing
  • Dislocation structures
  • Irradiated metals
  • TEM
  • X-ray diffraction


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