Irradiated microstructure of alloy 800H

J. Gan, J. I. Cole, T. R. Allen, S. Shutthanandan, S. Thevuthasan

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Austenitic alloy 800H has the same basic composition as INCOLOY alloy 800 (Fe-20Cr-32Ni) but with significantly higher creep-rupture strength due to a required 60 μm minimum grain size. It is one of the high temperature candidate alloys being considered for Generation IV nuclear reactor systems. The radiation resistance of 800H has not been previously studied. This work provides information on the microstructural changes in 800H after irradiation using 5.0 MeV Ni ions at 500 °C to 5 and 50 dpa. Following irradiation, changes in microstructure and phase stability were studied using transmission electron microscopy (TEM). At a dose of 50 dpa, no voids were found and the density and size of the faulted loops were measured to be 2.3 × 1016 cm-3 and 8.4 nm, respectively. There are fine precipitates distributed in 800H with an average size approximately 6 nm and a density greater than 9.1 × 1015 cm-3. The high Ni content and the presence of precipitates are believed to be responsible for the resistance to void formation at dose up to 50 dpa.

Original languageEnglish
Pages (from-to)223-227
Number of pages5
JournalJournal of Nuclear Materials
Volume351
Issue number1-3
DOIs
Publication statusPublished - 1 Jun 2006
Externally publishedYes

Fingerprint

Precipitates
voids
precipitates
creep rupture strength
Irradiation
dosage
microstructure
Microstructure
irradiation
Phase stability
nuclear reactors
heat resistant alloys
radiation tolerance
Nuclear reactors
Superalloys
Creep
grain size
Ions
Transmission electron microscopy
Radiation

Keywords

  • E0300
  • R0200
  • S0500

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Gan, J., Cole, J. I., Allen, T. R., Shutthanandan, S., & Thevuthasan, S. (2006). Irradiated microstructure of alloy 800H. Journal of Nuclear Materials, 351(1-3), 223-227. https://doi.org/10.1016/j.jnucmat.2006.02.009

Irradiated microstructure of alloy 800H. / Gan, J.; Cole, J. I.; Allen, T. R.; Shutthanandan, S.; Thevuthasan, S.

In: Journal of Nuclear Materials, Vol. 351, No. 1-3, 01.06.2006, p. 223-227.

Research output: Contribution to journalArticle

Gan, J, Cole, JI, Allen, TR, Shutthanandan, S & Thevuthasan, S 2006, 'Irradiated microstructure of alloy 800H', Journal of Nuclear Materials, vol. 351, no. 1-3, pp. 223-227. https://doi.org/10.1016/j.jnucmat.2006.02.009
Gan J, Cole JI, Allen TR, Shutthanandan S, Thevuthasan S. Irradiated microstructure of alloy 800H. Journal of Nuclear Materials. 2006 Jun 1;351(1-3):223-227. https://doi.org/10.1016/j.jnucmat.2006.02.009
Gan, J. ; Cole, J. I. ; Allen, T. R. ; Shutthanandan, S. ; Thevuthasan, S. / Irradiated microstructure of alloy 800H. In: Journal of Nuclear Materials. 2006 ; Vol. 351, No. 1-3. pp. 223-227.
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