Preparation and analysis of quasicrystalline phases by high energy ball milling and X-ray diffraction

A. I. Salimon, A. M. Korsunsky, E. V. Shelekhov, T. A. Sviridova

Research output: Contribution to journalConference articlepeer-review

19 Citations (Scopus)

Abstract

The consequences of solid-state reactions in mechanically alloyed Al-Cu-Fe powders were studied using advanced techniques of X-ray diffraction pattern interpretation. A set of intermetallic phases was identified which appeared as a result of mechanical alloying and subsequent annealing. These intermetallics were the intermediate products formed during to gradual mechanical and thermal homogenization and excitation. The quantitative phase composition of mechanically alloyed powders was determined using interactively controlled database phase analysis, fitting procedures and modelling of X-ray patterns for different structures. The analysis allowed us to optimize the processing route, and identify the conditions promoting the formation of single phase quasicrystalline powder. Single phase powders of the quasicrystalline Al6Cu2Fe intermetallic (ψ-phase) were obtained from the mixture of elemental powders Al70Cu20.3Fe9.7 after a short time milling and annealing at 800 °C under argon.

Original languageEnglish
Pages (from-to)II/-
JournalMaterials Science Forum
Volume321
Publication statusPublished - 2000
Externally publishedYes
EventProceedings of the 1998 6th European Powder Diffraction Conference (EPDIC 6) - Budapest, Hung
Duration: 22 Aug 199825 Aug 1998

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