Material properties and their influence on the behaviour of tungsten as plasma facing material

Research output: Contribution to journalArticle

Authors

  • Marius Wirtz
  • Inge Uytdenhouwen
  • Valdimir Barabash
  • F. Escourbiac
  • Takeshi Hirai
  • Jochen Linke
  • Thorsten Loewenhoff
  • Stephanie Panayotis
  • Gerald Pintsuk

Institutes & Expert groups

Documents & links

DOI

Abstract

With the aim of a possible improvement of the material specification for tungsten, five different tungsten products by different companies and by different production technologies (forging and rolling) are subject to a materials characterization program. Tungsten produced by forging results in an uniaxial elongated grain shape while rolled products have a plate like grain shape which has an influence on the mechanical properties of the material. The materials were investigated with respect to the following parameters: hardness measurements, microstructural investigations, tensile tests and recrystallisation sensitivity tests at 3 different temperatures. The obtained results show that different production processes have an influence on the resulting anisotropic microstructure and the related material properties of tungsten in the as-received state. Additionally, the recrystallization sensitivity varies between the different products, what could be a result of the different production processes. Additionally, two tungsten products were exposed to thermal shocks. The obtained results show that the improved recrystallisation behaviour has no major impact on the thermal shock performance.

Details

Original languageEnglish
Article number066018
JournalNuclear Fusion
Volume57
DOIs
StatePublished - 24 Apr 2017

Keywords

  • Tungsten, hardness measurements, microstructural investigations, tensile tests, recrystallisation sensitivity, thermal shocks

ID: 2422107