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@ARTICLE{zsoy:637653,
      author       = {Özsoy, Andaç and Gaudez, Steve and Hearn, William A. and
                      Baganis, Antonios and Hegedüs, Zoltán and Chen, Yunhui and
                      Rack, Alexander and Logé, Roland E. and Van Petegem,
                      Steven},
      title        = {{P}hase-{S}eparation-{D}riven {C}racking in {A}dditive
                      {M}anufacturing of {N}i-{C}u {A}lloy {S}ystems},
      journal      = {Additive manufacturing},
      volume       = {110},
      issn         = {2214-7810},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PUBDB-2025-03879},
      pages        = {104950},
      year         = {2025},
      abstract     = {This study investigates the cracking mechanism in additive
                      manufacturing of Ni-Cu multi-material combinations using
                      operando X-ray diffraction and imaging experiments during
                      laser powder-bed fusion (L-PBF) of CuCrZr and IN625. It is
                      shown that liquid immiscibility between the two alloy
                      systems stems from the interaction between Cu and the
                      alloying elements in IN625, causing both Cu-rich and Ni-rich
                      liquids to form with different freezing ranges.
                      Consequently, solidification cracking takes place due to the
                      large solidification range where the Ni-rich solid and
                      Cu-rich liquid co-exist. Guided by thermodynamic
                      calculations, it was identified that the highest crack
                      susceptibility occurs between 20 and $40 wt\%$
                      CuCrZr-IN625, which was further validated by printing
                      mixtures of the two alloys in different ratios. Operando
                      X-ray imaging and scanning electron microscopy
                      characterization revealed that the cracking occurred during
                      the terminal stage of solidification. It was observed that
                      the columnar grains of the Ni-rich primary solid separate
                      into cracks, where Cu-rich liquid regions persist over a
                      wide temperature range as the solidification of these
                      regions begin significantly later. It was concluded that the
                      mechanism of cracking explained in this study could be
                      extended to other Cu-Ni alloy combinations containing
                      elements that induce immiscibility when mixed with Cu during
                      fusion-based processing methods.},
      cin          = {DOOR ; HAS-User / FS-PETRA-D},
      cid          = {I:(DE-H253)HAS-User-20120731 /
                      I:(DE-H253)FS-PETRA-D-20210408},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
                      PSI-FELLOW-III-3i - International, Interdisciplinary $\&$
                      Intersectoral Postdoctoral Fellowships at the Paul Scherrer
                      Institut (884104) / FS-Proposal: I-20230515 EC
                      (I-20230515-EC)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
                      G:(EU-Grant)884104 / G:(DE-H253)I-20230515-EC},
      experiment   = {EXP:(DE-H253)P-P21.2-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1016/j.addma.2025.104950},
      url          = {https://bib-pubdb1.desy.de/record/637653},
}