Atomic-scale observations of two-dimensional Re segregation at an internal interface in W(Re)
- 24 September 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 65 (13) , 1615-1618
- https://doi.org/10.1103/physrevlett.65.1615
Abstract
Equilibrium Re segregation is studied at a grain boundary in a single-phase W–25-at. %-Re alloy employing atom-probe field-ion microscopy. The grain-boundary concentration is measured, without data deconvolution, to be 73.8±5.45 at. % Re at an interface plane. This is the first direct proof that segregation at a grain boundary can be purely two dimensional, and that it can occur at a so-called low-energy interface.Keywords
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