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@ARTICLE{Wang:904084,
      author       = {Wang, W. J. and Tan, X. Y. and Yang, S. P. and Luo, L. M.
                      and Zhu, X. Y. and Mao, Y. R. and Litnovsky, A. and Coenen,
                      J. W. and Linsmeier, Ch. and Wu, Yihui},
      title        = {{O}n grain growth and phase precipitation behaviors during
                      {W}-{C}r-{Z}r alloy densification using field-assisted
                      sintering technology},
      journal      = {International journal of refractory metals $\&$ hard
                      materials},
      volume       = {98},
      issn         = {0263-4368},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2021-05654},
      pages        = {105552 -},
      year         = {2021},
      note         = {kein Zugriff auf Postprint},
      abstract     = {Field-assisted sintering technology (FAST), as a fast
                      densification method with low process temperature, was used
                      to manufacture self-passivating tungsten alloys (SPTAs) of
                      W-Cr-Zr in this work. To clarify the behaviors of grain
                      growth and Cr-rich phase precipitation under the action of
                      electric current during the densification process,
                      interrupted sintering at different temperatures (600–1000
                      °C) were performed. According to the viscous flow theory,
                      the activation energy of W-Cr-Zr sample for densification is
                      ~23 kJ/mol. The differential form of power law was adopted
                      to evaluate the grain growth behavior. It is found that the
                      W-Cr-Zr alloy consolidated by FAST has a low activation
                      energy for grain growth of 82 kJ/mol. The Cr-rich phase
                      could be confirmed by XRD spectra even when the sintering
                      was interrupted at 600 °C. From the characterization of the
                      cross-sectional microstructure, the Cr-rich phases tend to
                      precipitate at sintering necks and defects (cracks/voids) in
                      particle interiors. The low formation temperature of the
                      Cr-rich phase is attributed to local overheating caused by
                      local high electric current. This work provides significant
                      insight into the mechanisms underlying the densification and
                      the evolution of the microstructure of the SPTAs during the
                      FAST process.},
      cin          = {IEK-4},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-4-20101013},
      pnm          = {1232 - Power-based Fuels and Chemicals (POF4-123)},
      pid          = {G:(DE-HGF)POF4-1232},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000663405100008},
      doi          = {10.1016/j.ijrmhm.2021.105552},
      url          = {https://juser.fz-juelich.de/record/904084},
}