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@ARTICLE{Feuerbacher:819306,
      author       = {Feuerbacher, Michael},
      title        = {{D}islocations and deformation microstructure in a
                      {B}2-ordered
                      {A}l$_{28}${C}o$_{20}${C}r$_{11}${F}e$_{15}${N}i$_{26}$
                      high-entropy alloy},
      journal      = {Scientific reports},
      volume       = {6},
      issn         = {2045-2322},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2016-05007},
      pages        = {29700 -},
      year         = {2016},
      abstract     = {High-entropy alloys are multicomponent metallic materials
                      currently attracting high research interest. They display a
                      unique combination of chemical disorder and crystalline
                      long-range order, and due to their attractive properties are
                      promising candidates for technological application. Many
                      high-entropy alloys possess surprisingly high strength,
                      occasionally in combination with high ductility and low
                      density. The mechanisms effecting these attractive
                      mechanical properties are not understood. This study
                      addresses the deformation mechanism of a
                      Al28Co20Cr11Fe15Ni26 high-entropy alloy, which is a
                      two-phase material, consisting of a B2-ordered matrix and
                      disordered body-centred inclusions. We quantitatively
                      analyse the microstructure and dislocations in deformed
                      samples by transmission-electron-microscopic methods
                      including weak-beam imaging and convergent-beam electron
                      diffraction. We find that the deformation process in the B2
                      phase is dominated by heterogeneous slip of screw
                      dislocations gliding on planes. The dislocations are perfect
                      superdislocations of the B2 lattice and show no
                      dissociation. This indicates that the antiphase-boundary
                      energy in the structure is very high, inhibiting spread of
                      the dislocation core. Along with the observation of a widely
                      extending strain field associated to the dislocations, our
                      results provide a possible explanation for the high strength
                      of this high-entropy alloy as a direct consequence of its
                      dislocation structure.},
      cin          = {PGI-5},
      ddc          = {000},
      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:000379846900001},
      doi          = {10.1038/srep29700},
      url          = {https://juser.fz-juelich.de/record/819306},
}