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@ARTICLE{Chowdhury:836956,
      author       = {Chowdhury, H. and Naumenko, K. and Altenbach, H. and
                      Krüger, M.},
      title        = {{R}ate {D}ependent {T}ension-{C}ompression-{A}symmetry of
                      ${T}i-61.8at\%{A}l$ {A}lloy with {L}ong {P}eriod
                      {S}uperstructures at 1050 °{C}},
      journal      = {Materials science and engineering / A},
      volume       = {700},
      issn         = {0921-5093},
      address      = {Amsterdam},
      publisher    = {Elsevier},
      reportid     = {FZJ-2017-05978},
      pages        = {503 - 511},
      year         = {2017},
      abstract     = {Al-rich TiAl alloy system has recently become a focus of
                      interest due to its higher oxidation resistance, $20\%$
                      lower density and higher (200 °C more) operating
                      temperature application possibility over conventional
                      Ti-rich TiAl alloys. Tension-compression asymmetry of such
                      type of high temperature material is an integral part of
                      modern engineering problems. Rate dependent asymmetric
                      phenomena of such alloys is specially important at high
                      homologous temperature because of the appearance of one or
                      more long period superstructures. However, micromechanical
                      modeling endeavor of Al-rich family has not been attempted
                      so far. In this work, we have presented two internal
                      variable based phenomenological crystal viscoplasticity
                      modeling approach for predicting rate dependent
                      tension-compression asymmetry of single crystal like
                      lamellar $Ti-61.8at\%Al$ binary alloy at hot compression
                      state (1050 °C) by employing finite strain and finite
                      rotation framework. Our material parameters were based on
                      calibrating three different sets of compressive stain rate
                      controlled plasticity data in two lamellar directions. Based
                      on the set of identified material parameters we have
                      predicted qualitatively the evolution of tension compression
                      asymmetry of this alloy. It is found that
                      tension-compression-asymmetry evolution is anisotropic and
                      highly pronounced throughout the deformation process
                      influenced by the lamellar morphology and long period
                      superstructures. Slip system level operative stresses show
                      that the slip domination and activity, more specifically,
                      major contributing systems are different in tension and
                      compression.},
      cin          = {IEK-2},
      ddc          = {600},
      cid          = {I:(DE-Juel1)IEK-2-20101013},
      pnm          = {111 - Efficient and Flexible Power Plants (POF3-111)},
      pid          = {G:(DE-HGF)POF3-111},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000406564300058},
      doi          = {10.1016/j.msea.2017.06.041},
      url          = {https://juser.fz-juelich.de/record/836956},
}