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@ARTICLE{Riesch:872839,
      author       = {Riesch, J. and Feichtmayer, A. and Fuhr, M. and
                      Almanstötter, J. and Coenen, J. W. and Gietl, H. and
                      Höschen, T. and Linsmeier, Ch and Neu, R.},
      title        = {{T}ensile behaviour of drawn tungsten wire used in tungsten
                      fibre-reinforced tungsten composites},
      journal      = {Physica scripta},
      volume       = {T170},
      issn         = {1402-4896},
      address      = {Stockholm},
      publisher    = {The Royal Swedish Academy of Sciences},
      reportid     = {FZJ-2020-00309},
      pages        = {014032 -},
      year         = {2017},
      abstract     = {In tungsten fibre-reinforced tungsten composites (Wf/W) the
                      brittleness problem of tungsten is solved by utilizing
                      extrinsic toughening mechanisms. The properties of the
                      composite are very much related to the properties of the
                      drawn tungsten wire used as fibre reinforcements. Its high
                      strength and capability of ductile deformation are ideal
                      properties facilitating toughening of Wf/W. Tensile tests
                      have been used for determining mechanical properties and
                      study the deformation and the fracture behaviour of the
                      wire. Tests of as-fabricated and straightened drawn wires
                      with a diameter between 16 and 150 μm as well as wire
                      electrochemically thinned to a diameter of 5 μm have been
                      performed. Engineering stress–strain curves and a
                      microscopic analysis are presented with the focus on the
                      ultimate strength. All fibres show a comparable
                      stress–strain behaviour comprising necking followed by a
                      ductile fracture. A reduction of the diameter by drawing
                      leads to an increase of strength up to 4500 MPa as a
                      consequence of a grain boundary hardening mechanism. Heat
                      treatment during straightening decreases the strength
                      whereas electrochemical thinning has no significant impact
                      on the mechanical behaviour.},
      cin          = {IEK-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113)},
      pid          = {G:(DE-HGF)POF3-113},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000414120500032},
      doi          = {10.1088/1402-4896/aa891d},
      url          = {https://juser.fz-juelich.de/record/872839},
}