Strain rate dependence of tensile properties of tungsten alloys for plasma-facing components in fusion reactors

Makoto Fukuda, Tsunenori Tabata, Akira Hasegawa, Shuhei Nogami, Takeo Muroga

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The strain rate dependence of tensile properties such as yield stress and fracture strain of W-3%Re and K-doped W-3%Re plates in the temperature range from room temperature (RT) to 300 °C was investigated in this work. The examined W alloy plates were fabricated by the same process and with the same reduction ratios. The yield stress of W-3%Re changed significantly with increasing strain rate as compared to K-doped W-3%Re. The strain rate sensitivity of W-3%Re was decreased by K-bubble dispersion. The low-temperature strength and ductility of W-3%Re was improved by K-bubble dispersion, although the fracture strain of K-doped W-3%Re was lower than that of W-3%Re at 200 and 300 °C.

Original languageEnglish
Pages (from-to)1674-1677
Number of pages4
JournalFusion Engineering and Design
Volume109-111
DOIs
Publication statusPublished - 2016

Keywords

  • Potassium bubble dispersion
  • Rhenium addition
  • Strain rate dependence
  • Tensile property
  • Tungsten

ASJC Scopus subject areas

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

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