Microstructure of tantalum irradiated with heavy ions

K. Yasunaga, Hideo Watanabe, N. Yoshida, T. Muroga, N. Noda

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

For the purpose of investigating the general response of tantalum to irradiation, microstructures have been observed after irradiation with 3.0 or 2.4 MeV Cu2+ ions at 773 to 1546 K and to 20 dpa. Below 1073 K, the microstructures consisted mainly of high density of small dislocation loops and straight dislocations. The small dislocation loops observed were identified to be of vacancy-type. Voids were formed above 973 K, however, the swelling was negligibly small up to 20 dpa below ∼1100 K. High density of defects observed below 1073 K may cause significant change in mechanical properties. This may be a concern in applying tantalum to fusion high heat flux components.

Original languageEnglish
Pages (from-to)879-882
Number of pages4
JournalJournal of Nuclear Materials
Volume258-263
Issue numberPART 1 A
DOIs
Publication statusPublished - Jan 1 1998

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Tantalum
Heavy Ions
tantalum
Heavy ions
heavy ions
Irradiation
microstructure
Microstructure
Dislocations (crystals)
Vacancies
Swelling
Heat flux
irradiation
Fusion reactions
Ions
swelling
Mechanical properties
Defects
voids
heat flux

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cite this

Microstructure of tantalum irradiated with heavy ions. / Yasunaga, K.; Watanabe, Hideo; Yoshida, N.; Muroga, T.; Noda, N.

In: Journal of Nuclear Materials, Vol. 258-263, No. PART 1 A, 01.01.1998, p. 879-882.

Research output: Contribution to journalArticle

Yasunaga, K, Watanabe, H, Yoshida, N, Muroga, T & Noda, N 1998, 'Microstructure of tantalum irradiated with heavy ions', Journal of Nuclear Materials, vol. 258-263, no. PART 1 A, pp. 879-882. https://doi.org/10.1016/S0022-3115(98)00261-X
Yasunaga, K. ; Watanabe, Hideo ; Yoshida, N. ; Muroga, T. ; Noda, N. / Microstructure of tantalum irradiated with heavy ions. In: Journal of Nuclear Materials. 1998 ; Vol. 258-263, No. PART 1 A. pp. 879-882.
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