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@ARTICLE{Jasper:824309,
      author       = {Jasper, B. and Schoenen, S. and Du, J. and Hoeschen, T. and
                      Koch, F. and Linsmeier, Ch. and Neu, R. and Riesch, J. and
                      Terra, A. and Coenen, J. W.},
      title        = {{B}ehavior of {T}ungsten {F}iber-{R}einforced {T}ungsten
                      {B}ased on {S}ingle {F}iber {P}ush-{O}ut {S}tudy},
      journal      = {Nuclear materials and energy},
      volume       = {9},
      issn         = {2352-1791},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {FZJ-2016-06919},
      pages        = {416–421},
      year         = {2016},
      abstract     = {To overcome the intrinsic brittleness of tungsten (W), a
                      tungsten fiber-reinforced tungsten-composite material (Wf/W)
                      is under development. The composite addresses the
                      brittleness of W by extrinsic toughening through the
                      introduction of energy dissipation mechanisms. These
                      mechanisms allow the reduction of stress peaks and thus
                      improve the materials resistance against crack growth. They
                      do not rely on the intrinsinc material properties such as
                      ductility. By utilizing powder metallurgy (PM) one could
                      benefit from available industrialized approaches for
                      composite production and alloying routes. In this
                      contribution the PM method of hot isostatic pressing (HIP)
                      is used to produce Wf/W samples containing W fibers coated
                      with an Er2O3 interface. Analysis of the matrix material
                      demonstrates a dense tungsten bulk, a deformed fiber and a
                      deformed, but still intact interface layer. Metallographic
                      analysis reveals indentations of powder particles in the
                      interface, forming a complex 3D structure. Special emphasis
                      is placed on push-out tests of single fiber HIP samples,
                      where a load is applied via a small indenter on the fiber,
                      to test the debonding and frictional properties of the Er2O3
                      interface region enabling the energy dissipation mechanisms.
                      Together with the obtained experimental results, an
                      axisymmetric finite element model is discussed and compared
                      to existing work. In the HIP Wf/W composites the matrix
                      adhesion is rather large and can dominate the push-out
                      behavior. This is in contrast to the previously tested CVD
                      produced samples.},
      cin          = {IEK-2 / IEK-4},
      ddc          = {333.7},
      cid          = {I:(DE-Juel1)IEK-2-20101013 / I:(DE-Juel1)IEK-4-20101013},
      pnm          = {174 - Plasma-Wall-Interaction (POF3-174) / HITEC -
                      Helmholtz Interdisciplinary Doctoral Training in Energy and
                      Climate Research (HITEC) (HITEC-20170406)},
      pid          = {G:(DE-HGF)POF3-174 / G:(DE-Juel1)HITEC-20170406},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000391191500071},
      doi          = {10.1016/j.nme.2016.04.010},
      url          = {https://juser.fz-juelich.de/record/824309},
}