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@ARTICLE{Htzer:887822,
      author       = {Hötzer, Johannes and Seiz, Marco and Kellner, Michael and
                      Rheinheimer, Wolfgang and Nestler, Britta},
      title        = {{P}hase-field simulation of solid state sintering},
      journal      = {Acta materialia},
      volume       = {164},
      issn         = {1359-6454},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2020-04448},
      pages        = {184 - 195},
      year         = {2019},
      abstract     = {Manufacturing materials for high performance applications
                      with tailored properties requires a deep knowledge about the
                      sintering process and especially the underlying
                      microstructure evolution. Due to the complex interplay of
                      the material and process parameters as well as complex
                      geometries it is challenging to predict the microstructure
                      evolution during sintering with analytical models. A
                      phase-field model based on the grand potential approach
                      considering volume, surface and grain boundary diffusion is
                      presented to describe the microstructural evolution during
                      solid state sintering. To efficiently investigate realistic
                      green bodies with multiple thousand particles in three
                      dimensions, the model is implemented in a highly optimized
                      manner in the massive parallel phase-field solver framework
                      Pace3D. By comparing the neck growth rates and the particle
                      approach in a two particle system for the different
                      diffusion mechanisms a good agreement to analytic solutions
                      is found. Based on a three dimensional green body of 24897
                      Al2O3-grains the densification is investigated with respect
                      to the dominant diffusion mechanisms and compared with the
                      analytic Coble model. Finally, the appearance of isolated
                      pores in the microstructure is discussed.},
      cin          = {IEK-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000456902800016},
      doi          = {10.1016/j.actamat.2018.10.021},
      url          = {https://juser.fz-juelich.de/record/887822},
}