Mechanical properties of β-SiC after Si- and dual Si + He-ion irradiation at various temperatures

Kyeong Hwan Park, Sosuke Kondo, Yutai Katoh, Akira Kohyama

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Dual-beam ion irradiation with Si- or si and He ions was used to simulate expected fusion conditions. Indentation techniques were used to determine the changes in hardness, modulus and indentation fracture toughness in dual-ion irradiated β-SiC at temperatures range from 673 to 1673 K. Ion irradiation clearly enhanced radiation induced hardening. Also, appreciable hardening by simultaneous helium injection revealed after dual-ion irradiation. The elastic modulus of the ion irradiated β-SiC exhibited a slight decrease at low temperature irradiation, and a recovery at high temperature irradiated β-SiC. The indentation fracture toughness increased after both single- and dual-ion irradiation for dose up to 1-3 dpa, then decreased for higher temperature and longer irradiation.

Original languageEnglish
Pages (from-to)455-459
Number of pages5
JournalFusion Science and Technology
Volume44
Issue number2
DOIs
Publication statusPublished - 2003 Sep
Externally publishedYes

ASJC Scopus subject areas

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

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