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@ARTICLE{zbilen:279041,
      author       = {Özbilen, Sedat and Liebert, Daniela and Beck, Tilmann and
                      Bram, Martin},
      title        = {{F}atigue behavior of highly porous titanium produced by
                      powder metallurgy with temporary space holders},
      journal      = {Materials science and engineering / C},
      volume       = {60},
      issn         = {0928-4931},
      address      = {Amsterdam},
      publisher    = {Elsevier},
      reportid     = {FZJ-2015-07209},
      pages        = {446 - 457},
      year         = {2016},
      abstract     = {Porous titanium cylinders were produced with a constant
                      amount of temporary space holder (70 $vol.\%).$ Different
                      interstitial contents were achieved by varying the starting
                      powders (HDH vs. gas atomized) and manufacturing method
                      (cold compaction without organic binders vs. warm compaction
                      of MIM feedstocks). Interstitial contents (O, C, and N) as a
                      function of manufacturing were measured by chemical
                      analysis. Samples contained 0.34–0.58 $wt.\%$ oxygen,
                      which was found to have the greatest effect on mechanical
                      properties. Quasi-static mechanical tests under compression
                      at low strain rate were used for reference and to define
                      parameters for cyclic compression tests. Not unexpectedly,
                      increased oxygen content increased the yield strength of the
                      porous titanium. Cyclic compression fatigue tests were
                      conducted using sinusoidal loading in a servo-hydraulic
                      testing machine. Increased oxygen content was concomitant
                      with embrittlement of the titanium matrix, resulting in
                      significant reduction of compression cycles before failure.
                      For samples with 0.34 $wt.\%$ oxygen, R, σmin and σmax
                      were varied systematically to estimate the fatigue limit (~
                      4 million cycles). Microstructural changes induced by cyclic
                      loading were then characterized by optical microscopy, SEM
                      and EBSD.},
      cin          = {IEK-1 / IEK-2},
      ddc          = {600},
      cid          = {I:(DE-Juel1)IEK-1-20101013 / I:(DE-Juel1)IEK-2-20101013},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000369204700052},
      doi          = {10.1016/j.msec.2015.11.050},
      url          = {https://juser.fz-juelich.de/record/279041},
}