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- Lee, Zonghoon
- Atomic-Scale Electron Microscopy Lab.
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Core-shell structures and precipitation kinetics of Al3 (Sc, Zr) Li2 intermetallic phase in Al-rich alloy
- Author(s)
- Radmilovic. V, Tolley A., Lee, Zonghoon, Dahmen, U.
- Issued Date
- 2006
- Citation
- METALURGIJA, v.12, no.4, pp.309 - 314
- Abstract
- While binary Al-Sc alloys form Al3Sc intermetallic precipitates, ternary Al-Sc-Zr alloys develop precipitates that contain both Sc and Zr. Electron microscopy characterization using Z-contrast imaging indicates rapid initial formation of Al3(Sc, Zr) precipitates with a Sc-rich core followed by the slower development of a Zr-rich Al3(Zr, Sc) shell. The shell acts as a diffusion barrier, slowing down the rate of precipitate coarsening.
- Publisher
- Hrvatsko Metalursko Drustvo/Croatian Metallurgical Society
- ISSN
- 0543-5846
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