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@ARTICLE{Ehlers:201771,
      author       = {Ehlers, F. J. H. and Wenner, S. and Andersen, S. J. and
                      Marioara, C. D. and Lefebvre, W. and Boothroyd, C. B. and
                      Holmestad, R.},
      title        = {{P}hase stabilization principle and precipitate-host
                      lattice influences for {A}l–{M}g–{S}i–{C}u alloy
                      precipitates},
      journal      = {Journal of materials science},
      volume       = {49},
      number       = {18},
      issn         = {1573-4803},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {FZJ-2015-04065},
      pages        = {6413 - 6426},
      year         = {2014},
      abstract     = {In this work, we seek to elucidate a common stabilization
                      principle for the metastable and equilibrium phases of the
                      Al–Mg–Si–Cu alloy system, through combined
                      experimental and theoretical studies. We examine the
                      structurally known well-ordered Al–Mg–Si–Cu alloy
                      metastable precipitates along with experimentally observed
                      disordered phases, using high angle annular dark field
                      scanning transmission electron microscopy. A small set of
                      local geometries is found to fully explain all structures.
                      Density functional theory based calculations have been
                      carried out on a larger set of structures, all fully
                      constructed by the same local geometries. The results reveal
                      that experimentally reported and hypothetical Cu-free phases
                      from the set are practically indistinguishable with regard
                      to formation enthalpy and composition. This strongly
                      supports a connection of the geometries with a bulk phase
                      stabilization principle. We relate our findings to the Si
                      network substructure commonly observed in all
                      Mg–Al–Si(–Cu) metastable precipitates, showing how
                      this structure can be regarded as a direct consequence of
                      the local geometries. Further, our proposed phase
                      stabilization principle clearly rests on the importance of
                      metal-Si interactions. Close links to the Al–Mg–Si
                      precipitation sequence are proposed.},
      cin          = {PGI-5},
      ddc          = {670},
      cid          = {I:(DE-Juel1)PGI-5-20110106},
      pnm          = {42G - Peter Grünberg-Centre (PG-C) (POF2-42G41)},
      pid          = {G:(DE-HGF)POF2-42G41},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000338348000026},
      doi          = {10.1007/s10853-014-8371-4},
      url          = {https://juser.fz-juelich.de/record/201771},
}