Research report 2012 - Max Planck Institute for Plasma Physics
Brittle material becomes pseudo-ductile: tungsten fibre reinforced tungsten
Riesch, Johann; You, Jeong-Ha; Höschen, Till; Linsmeier, Christian
„Plasmarand und Wand“
SummaryA new class of tungsten materials – tungsten fibre reinforced tungsten – is developed and investigated in the division „Plasma Edge and Wall“ of the MPI für Plasmaphysik. Tungsten fibres are combined with a tungsten matrix. Extrinsic mechanisms of energy dissipation in combination with a high ductility of the fibres lead to a strong toughness enhancement. A new method of chemical vapour infiltration for tungsten allows for the first time the fabrication of such material. The toughening mechanisms are shown by means of advanced experimental techniques such as x-ray microtomography.