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@ARTICLE{Stark:642057,
      author       = {Stark, Andreas and Lott, Dieter and Pyczak, Florian},
      title        = {{A} dilatometer and in situ synchrotron {X}-ray diffraction
                      study: $α$-quenching and reheating of a {N}b-rich titanium
                      aluminide alloy},
      journal      = {MRS advances},
      volume       = {10},
      number       = {14},
      issn         = {2731-5894},
      address      = {Cham},
      publisher    = {Springer Nature Switzerland AG},
      reportid     = {PUBDB-2025-05320},
      pages        = {1767 - 1772},
      year         = {2025},
      abstract     = {Intermetallic γ-TiAl-based alloys are currently used as
                      structural materials for turbine blades in aero engines.
                      Additive manufacturing is increasingly considered as an
                      additional manufacturing route for components consisting of
                      γ titanium aluminides; however, the high heating and
                      cooling rates result in chemical and thermodynamical
                      disequilibrated microstructures. In our study, in situ
                      synchrotron X-ray diffraction was applied to follow the
                      formation of the disequilibrium microstructure during
                      quenching and to study its re-equilibration during a
                      subsequent annealing treatment in a Nb-rich γ-TiAl-based
                      alloy. The quenched sample showed an incomplete massive
                      transformation, with large remaining α2 grains. During
                      reheating, the analysis of the collected data showed that
                      equilibration of the quenched microstructure takes place in
                      several reordering and transformation steps, e.g.,
                      orthorhombic distortion of the hexagonal α2 phase (around
                      550 °C), almost complete transformation of the
                      supersaturated quenched α2 to γ (around 850 °C), and
                      retransformation of γ to new α2 (around 1050 °C).},
      cin          = {Hereon},
      ddc          = {670},
      cid          = {I:(DE-H253)Hereon-20210428},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3)},
      pid          = {G:(DE-HGF)POF4-6G3},
      experiment   = {EXP:(DE-H253)P-P07-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1557/s43580-025-01382-w},
      url          = {https://bib-pubdb1.desy.de/record/642057},
}