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@ARTICLE{Giese:863562,
      author       = {Giese, Sven and Neumeier, Steffen and Amberger-Matschkal,
                      Doris and Bergholz, Jan and Vaßen, Robert and Göken,
                      Mathias},
      title        = {{M}icrotensile creep testing of freestanding {MC}r{A}l{Y}
                      bond coats},
      journal      = {Journal of materials research},
      volume       = {34},
      number       = {15},
      issn         = {2044-5326},
      address      = {Cambridge [u.a.]},
      publisher    = {Cambridge Univ. Press},
      reportid     = {FZJ-2019-03601},
      pages        = {2643-2652},
      year         = {2019},
      abstract     = {Bond coats are essential in gas turbine technology for
                      oxidation protection. Freestanding MCrAlY (M = Ni, Co) bond
                      coats were investigated with respect to their creep strength
                      at elevated temperatures. Three types of MCrAlY, a Ni-based
                      bond coat Amdry 386, a Co-based bond coat Amdry 9954 and
                      Amdry 9954 + 2 $wt\%$ Al2O3 (ODS = oxide dispersion
                      strengthened) produced by low pressure plasma spraying, were
                      analyzed. The two phase microstructure of the bond coats
                      consists of a fcc γ-Ni solid solution and a B2 β-NiAl
                      phase. Constant load experiments were performed in a
                      thermomechanical analyzer at temperatures between 900 and
                      950 °C. Microtensile test specimens with a diameter of 450
                      µm were produced by a high-precision grinding and polishing
                      process. Creep rupture was mainly due to void nucleation
                      along the β–γ interfaces and grain boundaries. The time
                      to failure is larger in Ni-based Amdry 386 compared to that
                      in Co-based Amdry 9954 due to a higher fraction of the
                      high-strength β-NiAl phase at test temperatures. The
                      addition of ODS-particles in the Co-based bond coat Amdry
                      9954 resulted in a better creep resistance but lower
                      ductility in comparison to ODS-particle-free Amdry 9954.},
      cin          = {IEK-1},
      ddc          = {670},
      cid          = {I:(DE-Juel1)IEK-1-20101013},
      pnm          = {113 - Methods and Concepts for Material Development
                      (POF3-113)},
      pid          = {G:(DE-HGF)POF3-113},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000482958400008},
      doi          = {10.1557/jmr.2019.169},
      url          = {https://juser.fz-juelich.de/record/863562},
}