Development of nanostructured tungsten based materials resistant to recrystallization and/or radiation induced embrittlement

H. Kurishita, H. Arakawa, S. Matsuo, T. Sakamoto, S. Kobayashi, K. Nakai, G. Pintsuk, J. Linke, S. Tsurekawa, V. Yardley, Kazutoshi Tokunaga, T. Takida, M. Katoh, A. Ikegaya, Y. Ueda, M. Kawai, N. Yoshida

Research output: Contribution to journalReview article

60 Citations (Scopus)

Abstract

Mitigation of embrittlement caused by recrystallization and radiation is the key issue of tungsten (W based materials for use in the advanced nuclear system such as fusion reactor applications. In this paper, our nanostructured W materials development performed so far to solve the key issue is reviewed, including new original data. Firstly, the basic concept of mitigation of the embrittlement is shown. The approach to the concept has yielded ultra-fine grained, recrystallized (UFGR) W(0.251.5) mass%TiC compacts containing fine TiC dispersoids (precipitates). The UFGR W(0.251.5)% TiC exhibits favorable as well as unfavorable features from the viewpoints of microstructures and various thermo-mechanical properties including the response to neutron and ion irradiations. Most of the unfavorable features stem from insufficient strengthening of weak random grain boundaries (GBs) in the recrystallized state. The focal point on this study is, therefore, to develop a new microstructural modification method to significantly strengthen the random GBs. The method is designated as GSMM (GB Sliding-based Microstructural Modification and has lead to the birth of toughened, fine-grained W1.1% TiC in the recrystallized state (TFGR W1.1TiC). The TFGRW1.1TiC exhibits much improved thermo-mechanical properties. The applicability of TFGRW1.1TiC to the divertor in ITER is discussed.

Original languageEnglish
Pages (from-to)456-465
Number of pages10
JournalMaterials Transactions
Volume54
Issue number4
DOIs
Publication statusPublished - Apr 8 2013

Fingerprint

Tungsten
embrittlement
Embrittlement
tungsten
Grain boundaries
grain boundaries
Radiation
Mechanical properties
Grain boundary sliding
Neutron irradiation
Fusion reactors
radiation
Ion bombardment
Nanostructured materials
mechanical properties
Precipitates
fusion reactors
neutron irradiation
ion irradiation
stems

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Development of nanostructured tungsten based materials resistant to recrystallization and/or radiation induced embrittlement. / Kurishita, H.; Arakawa, H.; Matsuo, S.; Sakamoto, T.; Kobayashi, S.; Nakai, K.; Pintsuk, G.; Linke, J.; Tsurekawa, S.; Yardley, V.; Tokunaga, Kazutoshi; Takida, T.; Katoh, M.; Ikegaya, A.; Ueda, Y.; Kawai, M.; Yoshida, N.

In: Materials Transactions, Vol. 54, No. 4, 08.04.2013, p. 456-465.

Research output: Contribution to journalReview article

Kurishita, H, Arakawa, H, Matsuo, S, Sakamoto, T, Kobayashi, S, Nakai, K, Pintsuk, G, Linke, J, Tsurekawa, S, Yardley, V, Tokunaga, K, Takida, T, Katoh, M, Ikegaya, A, Ueda, Y, Kawai, M & Yoshida, N 2013, 'Development of nanostructured tungsten based materials resistant to recrystallization and/or radiation induced embrittlement', Materials Transactions, vol. 54, no. 4, pp. 456-465. https://doi.org/10.2320/matertrans.MG201209
Kurishita, H. ; Arakawa, H. ; Matsuo, S. ; Sakamoto, T. ; Kobayashi, S. ; Nakai, K. ; Pintsuk, G. ; Linke, J. ; Tsurekawa, S. ; Yardley, V. ; Tokunaga, Kazutoshi ; Takida, T. ; Katoh, M. ; Ikegaya, A. ; Ueda, Y. ; Kawai, M. ; Yoshida, N. / Development of nanostructured tungsten based materials resistant to recrystallization and/or radiation induced embrittlement. In: Materials Transactions. 2013 ; Vol. 54, No. 4. pp. 456-465.
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AU - Kobayashi, S.

AU - Nakai, K.

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