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@ARTICLE{Lee:633015,
      author       = {Lee, Isshu and Bhatta, Laxman and Xu, Donghua and
                      Blankenburg, Malte and Lienert, Ulrich and Liss,
                      Klaus-Dieter and Kawasaki, Megumi},
      title        = {{D}efect-driven relaxation of nanostructured {C}u examined
                      by in situ heating high-energy synchrotron {X}-ray microbeam
                      diffraction},
      journal      = {Journal of alloys and compounds},
      volume       = {1028},
      issn         = {0925-8388},
      address      = {Lausanne},
      publisher    = {Elsevier},
      reportid     = {PUBDB-2025-02341},
      pages        = {180599},
      year         = {2025},
      abstract     = {Bulk nanostructured metals introduced by severe plastic
                      deformation contain an excess of lattice defects. A
                      nanostructured copper (Cu) processed by a high-pressure
                      torsion technique was examined during in situ heating to
                      investigate microstructural relaxation and quantify the
                      evolution of microstructural parameters using high- energy
                      synchrotron microbeam X-ray diffraction. While general
                      microstructural relaxations, such as recovery,
                      recrystallization, and subsequent grain growth, were
                      observed, the key microstructural parameters, including
                      grain size, microstrain, dislocation density, and thermal
                      expansion coefficient, and their changes at critical
                      temperatures were uniquely described and quantified through
                      diffraction data. Based on this analysis, the stored
                      energies driving thermally activated microstructural changes
                      were estimated for individual defect types — grain
                      boundaries, dislocations, and vacancies — that are
                      expected to significantly influence the relaxation behavior
                      of nanostructured Cu. This study demonstrates the
                      effectiveness of diffraction characterization techniques for
                      gaining a comprehensive understanding of the thermal
                      stability of bulk nanostructured materials.},
      cin          = {DOOR ; HAS-User / FS-PET-D},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731 /
                      I:(DE-H253)FS-PET-D-20190712},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
                      FS-Proposal: I-20200639 (I-20200639)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
                      G:(DE-H253)I-20200639},
      experiment   = {EXP:(DE-H253)P-P21.2-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1016/j.jallcom.2025.180599},
      url          = {https://bib-pubdb1.desy.de/record/633015},
}