Joining of ODS steels and tungsten for fusion applications

Sanghoon Noh, Ryuta Kasada, Naoko Oono, Takuya Nagasaka, Akihiko Kimura

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

6 Citations (Scopus)

Abstract

Liquid phase diffusion bonding between ODS steel and pure W was carried out and its joint strength was investigated for fusion applications. A block of high-Cr ODS ferritic steel and a W plate were diffusion bonded at 1240 °C for 1h with/without an insert material under an uni-axial compression load and a high vacuum atmosphere. Cross sectional microstructures of joint region were observed by scanning electron microscope and the mechanical properties of the joint region were evaluated by hardness test and torsion tests. Microstructure analysis revealed that high Cr ODS ferritic steel block and W plate with insert material was successfully diffusion bonded with free of voids. Shear strength of liquid phase diffusion bonded ODS steel and W was higher than that of directly solid state diffusion bonded ODS steel and W. This was attributed to residual strain which is resulted from the difference of thermal conductivity between the ODS steel and W.

Original languageEnglish
Title of host publicationPRICM7
PublisherTrans Tech Publications Ltd
Pages2891-2894
Number of pages4
ISBN (Print)0878492550, 9780878492558
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7 - Cairns, QLD, Australia
Duration: 2010 Aug 22010 Aug 6

Publication series

NameMaterials Science Forum
Volume654-656
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
CountryAustralia
CityCairns, QLD
Period10/8/210/8/6

Keywords

  • Diffusion bonding
  • Divertor
  • First wall
  • Oxide dispersion strengthened steel
  • Tungsten

ASJC Scopus subject areas

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

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