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@ARTICLE{Niewolak:837228,
      author       = {Niewolak, L. and Zurek, J. and Wessel, E. and Hattendorf,
                      H. and Quadakkers, W. J.},
      title        = {{T}emperature dependence of phase composition in {W} and
                      {S}i-alloyed high chromium ferritic steels for {SOFC}
                      interconnect applications},
      journal      = {Journal of alloys and compounds},
      volume       = {717},
      issn         = {0925-8388},
      address      = {Lausanne},
      publisher    = {Elsevier},
      reportid     = {FZJ-2017-06203},
      pages        = {240-253},
      year         = {2017},
      abstract     = {Tungsten alloyed high-chromium ferritic steels such as the
                      commercially available alloy Crofer 22 H have been proposed
                      as construction materials for interconnects in Solid Oxide
                      Fuel Cells. The background of the present study relates to
                      the qualification of such alloys, especially with respect to
                      a possible optimization of the tungsten concentration,
                      aiming at formation of the strengthening intermetallic
                      phases. For this purpose the chemical composition of
                      intermetallic phases in a number of Fe-Cr-W-base model
                      alloys after exposure at temperatures between 600 °C and
                      900 °C was measured by SEM/EDX and TEM/EDX. The obtained
                      chemical and phase compositions were used for estimation of
                      the iron-rich corner of the Fe-Cr-W system in the
                      temperature range 600–900 °C. Finally, the experimental
                      results were compared with values calculated using the
                      Thermocalc software and the database TCFE 7. This comparison
                      showed that in the temperature range 800 °C–900 °C the
                      calculations gave a qualitatively correct description of
                      phases present in the microstructure, however, substantial
                      differences between calculations and experiments existed in
                      the temperature range 600 °C–700 °C. Moreover, it was
                      found that the solubility of silicon in the C14 Laves phase
                      of the type Fe2W is substantially smaller than that in the
                      Fe2Nb based laves phase present in Crofer 22 H.},
      cin          = {IEK-2},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-2-20101013},
      pnm          = {135 - Fuel Cells (POF3-135)},
      pid          = {G:(DE-HGF)POF3-135},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000402931200034},
      doi          = {10.1016/j.jallcom.2017.05.113},
      url          = {https://juser.fz-juelich.de/record/837228},
}