Publication detail

Self-ion emulation of high dose neutron irradiated microstructure in stainless steels

JIAO, Z. MICHALIČKA, J. WAS, G.

Original Title

Self-ion emulation of high dose neutron irradiated microstructure in stainless steels

Type

journal article in Web of Science

Language

English

Original Abstract

Solution-annealed 304L stainless steel (SS) was irradiated to 130 dpa at 380 °C, and to 15 dpa at 500 °C and 600 °C, and cold-worked 316 SS (CW 316 SS) was irradiated to 130 dpa at 380 °C using 5 MeV Fe++/Ni++ to produce microstructures and radiation-induced segregation (RIS) for comparison with that from neutron irradiation at 320 °C to 46 dpa in the BOR60 reactor. For the 304L SS alloy, self-ion irradiation at 380 °C produced a dislocation loop microstructure that was comparable to that by neutron irradiation. No voids were observed in either the 380 °C self-ion irradiation or the neutron irradiation conditions. Irradiation at 600 °C produced the best match to radiation-induced segregation of Cr and Ni with the neutron irradiation, consistent with the prediction of a large temperature shift by Mansur's invariant relations for RIS. For the CW 316 SS alloy irradiated to 130 dpa at 380 °C, both the irradiated microstructure (dislocation loops, precipitates and voids) and RIS reasonably matched the neutron-irradiated sample. The smaller temperature shift for RIS in CW 316 SS was likely due to the high sink (dislocation) density induced by the cold work. A single self-ion irradiation condition at a dose rate ∼1000× that in reactor does not match both dislocation loops and RIS in solution-annealed 304L SS. However, a single irradiation temperature produced a reasonable match with both the dislocation/precipitate microstructure and RIS in CW 316 SS, indicating that sink density is a critical factor in determining the temperature shift for self-ion irradiations.

Keywords

Microstructure Radiation-induced segregation Radiation effects

Authors

JIAO, Z.; MICHALIČKA, J.; WAS, G.

Released

2. 4. 2018

ISBN

0022-3115

Periodical

JOURNAL OF NUCLEAR MATERIALS

Year of study

501

Number

1

State

Kingdom of the Netherlands

Pages from

312

Pages to

318

Pages count

7

URL

https://www.sciencedirect.com/science/article/pii/S0022311517308899?via%3Dihub

BibTex

@article{BUT149570,
  author="JIAO, Z. and MICHALIČKA, J. and WAS, G.",
  title="Self-ion emulation of high dose neutron irradiated microstructure in stainless steels",
  journal="JOURNAL OF NUCLEAR MATERIALS",
  year="2018",
  volume="501",
  number="1",
  pages="312--318",
  doi="10.1016/j.jnucmat.2018.01.054",
  issn="0022-3115",
  url="https://www.sciencedirect.com/science/article/pii/S0022311517308899?via%3Dihub"
}