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@ARTICLE{Heidelmann:825982,
      author       = {Heidelmann, Markus and Feuerbacher, Michael and Ma,
                      Duancheng and Grabowski, Blazej},
      title        = {{S}tructural anomaly in the high-entropy alloy
                      {Z}r{N}b{T}i{T}a{H}f},
      journal      = {Intermetallics},
      volume       = {68},
      issn         = {0966-9795},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {FZJ-2017-00254},
      pages        = {11 - 15},
      year         = {2016},
      abstract     = {We present a high-resolution scanning transmission electron
                      microscopy study on the microstructure of a non-equiatomic
                      high-entropy alloy with the composition of Zr12.7 Nb30.8
                      Ti17.7 Ta30.8 Hf8.0 $(at.\%).$ We identify a novel
                      inter-grain phase (IGP) that compositionally and
                      structurally differs from the surrounding body-centred cubic
                      host. In particular, we find that the IGP has a composition
                      of Zr52.8 Nb6.9 Ti4.6 Ta20.6 Hf15.1 $(at.\%)$ and that it
                      solidifies in a face-centred cubic crystal lattice
                      structure. The occurrence of the latter is unexpected and
                      remarkable since all possible binary phase diagrams of the
                      involved elements only show body-centred cubic and hexagonal
                      close-packed crystal structures. Therefore, to validate our
                      experimental findings we have conducted parameter-free
                      ab-initio calculations based on density-functional theory
                      and the coherent-potential approximation. The simulations
                      support our experimental findings showing that for the
                      composition of the IGP, the face-centred cubic crystal
                      structure is indeed the most stable one.},
      cin          = {PGI-5},
      ddc          = {660},
      cid          = {I:(DE-Juel1)PGI-5-20110106},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000364896500003},
      doi          = {10.1016/j.intermet.2015.08.013},
      url          = {https://juser.fz-juelich.de/record/825982},
}