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Type Sudbrack, Chantal K.; Noebe, Ronald D.; Seidman, David N.
  Publication Temporal evolution of sub-nanometer compositional profiles across the g/g' interface in a model Ni-Al-Cr superalloy Volume Book Chapter
Pages 2005
  Abstract Solid-Solid Phase Transformations in Inorganic Materials 2005  
  Corporate Author  
Publisher 2  
Editor
  Summary Language 543-548 Series Editor interface composition; diffusion-limited growth; nanostructure; nickel alloys  
Abbreviated Series Title Early-stage phase separation in a Ni-5.2 Al-14.2 Cr at.% superalloy, isothermally decomposing at 873 K, is investigated with atom-probe tomography. Sub-nanometer scale compositional profiles across the gamma/gamma-prime (L1_2) interfaces demonstrate that both the gamma-matrix and the gamma-prime precipitate compositions evolve with time. Observed chemical gradients of Al depletion and Cr enrichment adjacent to the gamma-prime precipitates are transient, consistent with well-established model predictions for diffusion-limited growth, and mark the first detailed observation of this phenomenon. Furthermore, it is shown that Cr atoms are kinetically trapped in the growing precipitates.
  Series Issue ISSN  
Medium
  Expedition The Minerals, Metals, Materials Scoiety Notes Warrendale, PA  
Call Number J. M. Howe, D. E. Laughlin, J. K. Lee, U. Dahmen and W. A. Soffa  
Contribution Id  
Serial URL ISBN  
Solid-Solid Phase Transformations in Inorganic Materials 2005, Phoenix AZ yes NU @ karnesky @ 180
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