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Journal of Materials Science

, Volume 26, Issue 4, pp 963–969 | Cite as

Microstructure of a rapidly solidified 65Al-20Cu-15Fe (at. %) alloy

  • Ping Liu
  • An Pang Tsai
  • Akihisa Inoue
  • L. Arnberg
Papers

Abstract

The microstructure of rapidly solidified 65Al-20Cu-15Fe (at. %) powders was investigated by analytical transmission electron microscopy. It was found that segregation in the powder particle occurred during solidification. The major phase present in the powder particles was the icosahedral quasicrystalline l-phase, which was determined to have space group\(\bar 3\bar 5\). Two other crystalline phases, β-AlCu3 and θ-Al13Fe4, coexisted with the l-phase. The l-phase was revealed by convergent beam electron diffraction to have three-dimensional quasiperiodicity (τ = 1.618) which is different from quasicrystals in the other systems. The compositions of the three phases have been analysed by energy dispersive X-ray analysis. The l-phase in this system could be approximately described as Al5CuFe. The composition of the θ-Al13Fe4 was very close to the equilibrium condition while β-AlCu3 was far from stoichiometry. An orientation relationship between β-AlCu3 and θ-Al13Fe4 was found as follows: [110]β∥[010]θ [111]β∥[001]θ

Keywords

Polymer Microstructure Microscopy Electron Microscopy Transmission Electron Microscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd 1991

Authors and Affiliations

  • Ping Liu
    • 1
  • An Pang Tsai
    • 2
  • Akihisa Inoue
    • 2
  • L. Arnberg
    • 3
  1. 1.Department of PhysicsChalmers University of TechnologyGöteborgSweden
  2. 2.Institute for Materials ResearchTohoku UniversitySendaiJapan
  3. 3.Swedish Institute for Metals ResearchStockholmSweden

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