% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Gitschthaler:634312,
      author       = {Gitschthaler, Arno and Hahn, Rainer and Zauner, Lukas and
                      Wojcik, Piotre and Fahrnberger, F. and Hutter, H. and
                      Davydok, Anton and Krywka, C. and Jerg, C. and Ramm, J. and
                      Eriksson, A. and Kolozsvári, S. and Polcik, P. and Riedl,
                      H.},
      title        = {{E}nhancing the high-cycle fatigue strength of
                      {T}i-{A}l-{N} coated {T}i-6{A}l-4{V} by residual stress
                      design},
      journal      = {Materials and design},
      volume       = {257},
      issn         = {0264-1275},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier Science},
      reportid     = {PUBDB-2025-02489},
      pages        = {114445},
      year         = {2025},
      abstract     = {Physical vapor deposited coatings are widely utilized as
                      surface protection for metal and ceramic components
                      operating in harsh environments. However, research on the
                      high-cycle fatigue (HCF) life of hard-coated metal
                      substrates has reached contradictory conclusions, leaving it
                      unclear whether ceramic coatings enhance or compromise their
                      fatigue resistance. To improve reliability and extend
                      service life, this study explores the residual
                      stress-dependent influence of arc evaporated TiAlN-based
                      thin films on the fatigue life of Ti-6Al-4V. Therefore,
                      different stress-modifying approaches were implemented,
                      including a substrate bias variation, a Tantalum based
                      alloying strategy, and a specific interlayer design. The
                      combination of high-cycle fatigue tests, synchrotron-based
                      experiments providing depth-resolved stress profiles, and
                      the formulation of a linear-elastic stress-failure model
                      resulted in the following identified relationships: (i) A
                      threshold level in the residual compressive stress state
                      must be present in TiAlN-based coatings to prevent
                      deteriorating HCF performance introduced by failure of the
                      ceramic nitride. (ii) Once the residual compressive stress
                      field is able to shift fatigue crack nucleation into the
                      bulk titanium alloy, the HCF life increases. (iii) The
                      further the residual tensile stress peak is shifted from the
                      bulk material surface — achieved through an optimized
                      residual stress design implementing a metallic interlayer
                      beneath the TiAlN-based top coating — the greater the
                      improvement in HCF strength. Overall, this approach achieved
                      an unprecedented HCF enhancement exceeding 50 $\%$ compared
                      to uncoated Ti-6Al-4V (from 420 MPa to 628 MPa at 107 load
                      cycles), highlighting the importance of an in-depth
                      understanding of stress gradients within coating-substrate
                      combinations.},
      cin          = {DOOR ; HAS-User / Hereon},
      ddc          = {690},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)Hereon-20210428},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20211636
                      EC (I-20211636-EC) / FS-Proposal: I-20221274 EC
                      (I-20221274-EC)},
      pid          = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20211636-EC /
                      G:(DE-H253)I-20221274-EC},
      experiment   = {EXP:(DE-H253)P-P03-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1016/j.matdes.2025.114445},
      url          = {https://bib-pubdb1.desy.de/record/634312},
}