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Symposium F.SF08—Defect-Dominated Plasticity and Chemistry in Metals and Alloys

Extended defects or imperfections in metals and alloys describe the state of the microstructure at different length and time scales. Many material properties and processing routes inherently influence or are affected by the microstructure and its extended defects. The spatial arrangement of these defects imposes various critical dimensions at multiple length scales and thereby gives rise to size effects. These can, in turn, be utilized to archive otherwise unprecedented materials performance in nanostructured materials.

At the nanoscale or the level of the defect core, the local chemistry and direct defect-defect interaction also opens a rich materials design space, which can be explored and exploited, for example, for extreme conditions or thermomechanical stability. A prominent example is plasticity taking place in High Entropy Alloys, with is affected by pronounced local chemical fluctuations influencing the defect properties.

This symposium will explore the fundamental properties of extended defects (e.g., solid-state interfaces, dislocations, grain boundaries, …) in the context of the interplay between defect structure and chemistry. Their role in determining the behavior of metallic materials will be addressed, and potential avenues to tailor materials by defect engineering are identified. The symposium will emphasize simulations that bridge length and time-scales, as well as corresponding experiments providing highly local structural and chemical information in the vicinity of the defects.

Topics will include:

  • Structure-property relation of extended defects in metals and alloys
  • Multiscale modelling of defect properties, defect interaction and defect evolution
  • <em>In situ</em> and <em>ex situ</em> characterization of defect
  • Materials design concepts utilizing structural defects
  • Nanomaterials
  • Size effects and their exploitation in architecture materials
  • Materials processing with defects
  • Defects stimulated segregation

Invited Speakers:

  • Julie Cairney (University of Sydney, Australia)
  • Dominique Chatain (Interdisciplinary Center of Nanoscience of Marseille, France)
  • Emmanuel Clouet (Commissariat à l’énergie atomique et aux énergies alternatives, France)
  • Nicolas Combe (Centre d’Élaboration des Matériaux et d’Etudes Structurales, France)
  • William Curtin (École Polytechnique Fédérale de Lausanne, Switzerland)
  • Gerhard Dehm (Max Planck Institute for Iron Research, Germany)
  • Elizabeth Holm (Carnegie Mellon University, USA)
  • Eric Homer (Brigham Young University, USA)
  • Christopher Hutchinson (Monash University, Australia)
  • Sandra Korte-Kerzel (RWTH Aachen University, Germany)
  • Sophie Primig (University of New South Wales, Australia)
  • Tim Rupert (University of California, Irvine, USA)
  • Ting Zhu (Georgia Institute of Technology, USA)

Symposium Organizers

Christian Brandl
The University of Melbourne
Melbourne School of Engineering

Daniel S. Gianola
University of California, Santa Barbara

Daniel Kiener
Montanuniversität Leoben

Stefanie Sandlöbes-Haut
RWTH Aachen University

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