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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) L12 intermetallic phase in al-rich alloy
- Author(s)
- RADMILOVIC, V., Lee, Zonghoon, TOLLEY, A., DAHMEN, U.
- Issued Date
- 2006-09-28
- Citation
- Balkan Conference on Metallurgy
- 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
- AMES(Association of Metallurgical Engineers of Serbia )
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