Abstract
Impurity segregation at the interface between β-Nb precipitates and α-Zr matrix in Zr-2.5 wt.%Nb alloy was investigated by complementary analysis with positron annihilation spectroscopy (PAS) and atom probe tomography (APT). Fe segregation and Fe-decorated defects were found at the interface. PAS also suggested that Fe was segregated to a concentration of several tens of percent at a local region at the interface, which is approximately one order of magnitude higher than APT and difficult to observe directly even using APT.
Original language | English |
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Article number | 10717 |
Pages (from-to) | 156-159 |
Number of pages | 4 |
Journal | Scripta Materialia |
Volume | 108 |
DOIs | |
Publication status | Published - 2015 Nov 1 |
Keywords
- Atom probe tomography
- Impurity segregation
- Positron annihilation spectroscopy
- Precipitate interface
- Zirconium alloy
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys