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Type Biswas, Aniruddha; Siegel, Donald J.; Seidman, David N.
  Publication Simultaneous Segregation at Coherent and Semi-coherent Heterophase Interfaces Volume Journal Article
Pages 2010
  Abstract Physical Review Letters  
  Corporate Author  
Publisher 105  
Editor 7
  Summary Language 076102-76103 Series Editor Al-Cu  
Abbreviated Series Title Employing a combination of three-dimensional atom-probe tomography and first-principles calculations, significant qualitative and quantitative differences in solute segregation at coherent and semi-coherent interfaces bounding a single θ'-precipitate in an Al-Cu-based alloy are found. Qualitatively, localized segregation is observed at the semi-coherent interface, whereas delocalized behavior is present at the coherent facets. Quantitatively, segregation at the semi-coherent interface is a factor of two greater than at the coherent interface, resulting in a decrease in interfacial energy that is more than five times greater than that observed at the coherent facet. These observations illustrate unambiguously the strong couplings among interface structure, chemical composition, and energetics.
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Medium
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no NU @ karnesky @ 10810
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