The irradiated microstructure of ferritic-martensitic steel T91 and 9Cr-ODS

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A ferritic steel T91 and an oxide dispersion strengthened (ODS) martensitic steel 9Cr-ODS were irradiated with 5 MeV Ni ions at 500°C at a dose rate of 1.38×10 -3 dpa/s to doses of 5, 50 and 150 dpa. Both alloys are iron-based with 9Cr and have been designed for use in higher temperature energy systems. However, the radiation effects on these two alloys are not well characterized. For T91, the irradiated microstructure was dominated by tangled dislocation and precipitates, similar to the unirradiated condition except the presence of large dislocation loops of type a<100>. The microstructure of alloy 9Cr-ODS for both the unirradiated and irradiated cases was dominated by dense dislocations, precipitates and yttrium oxides particles and no dislocation loops were observed. The average size of yttrium oxides particles slightly decreased with dose from 11.8 nm for the unirradiated to 9.1 nm at 150 dpa. No voids were detected for both alloys up to a dose of 150 dpa.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsL.-M. Wang, R. Fromknecht, L.L. Snead, D.F. Downey, H. Takahashi
Pages13-18
Number of pages6
Volume792
Publication statusPublished - 2003
Externally publishedYes
EventRadiation Effects and Ion-Beam Processing of Materials - Boston, MA., United States
Duration: 1 Dec 20035 Dec 2003

Other

OtherRadiation Effects and Ion-Beam Processing of Materials
CountryUnited States
CityBoston, MA.
Period1/12/035/12/03

Fingerprint

Martensitic steel
Ferritic steel
Oxides
Yttrium oxide
Microstructure
Precipitates
Iron alloys
Radiation effects
Ions
Temperature
yttria

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Gan, J., Allen, T. R., Cole, J. I., Ukai, S., Shutthanandan, S., & Thevuthasan, S. (2003). The irradiated microstructure of ferritic-martensitic steel T91 and 9Cr-ODS. In L-M. Wang, R. Fromknecht, L. L. Snead, D. F. Downey, & H. Takahashi (Eds.), Materials Research Society Symposium - Proceedings (Vol. 792, pp. 13-18)

The irradiated microstructure of ferritic-martensitic steel T91 and 9Cr-ODS. / Gan, J.; Allen, T. R.; Cole, J. I.; Ukai, S.; Shutthanandan, S.; Thevuthasan, S.

Materials Research Society Symposium - Proceedings. ed. / L.-M. Wang; R. Fromknecht; L.L. Snead; D.F. Downey; H. Takahashi. Vol. 792 2003. p. 13-18.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gan, J, Allen, TR, Cole, JI, Ukai, S, Shutthanandan, S & Thevuthasan, S 2003, The irradiated microstructure of ferritic-martensitic steel T91 and 9Cr-ODS. in L-M Wang, R Fromknecht, LL Snead, DF Downey & H Takahashi (eds), Materials Research Society Symposium - Proceedings. vol. 792, pp. 13-18, Radiation Effects and Ion-Beam Processing of Materials, Boston, MA., United States, 1/12/03.
Gan J, Allen TR, Cole JI, Ukai S, Shutthanandan S, Thevuthasan S. The irradiated microstructure of ferritic-martensitic steel T91 and 9Cr-ODS. In Wang L-M, Fromknecht R, Snead LL, Downey DF, Takahashi H, editors, Materials Research Society Symposium - Proceedings. Vol. 792. 2003. p. 13-18
Gan, J. ; Allen, T. R. ; Cole, J. I. ; Ukai, S. ; Shutthanandan, S. ; Thevuthasan, S. / The irradiated microstructure of ferritic-martensitic steel T91 and 9Cr-ODS. Materials Research Society Symposium - Proceedings. editor / L.-M. Wang ; R. Fromknecht ; L.L. Snead ; D.F. Downey ; H. Takahashi. Vol. 792 2003. pp. 13-18
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