Sc-45 nuclear magnetic resonance analysis of precipitation in dilute Al-Sc alloys

S Celotto*, TJ Bastow

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

    15 Citaten (Scopus)

    Samenvatting

    Nuclear magnetic resonance (NMR) with Sc-45 is used to determine the solid solubility of scandium in aluminium and to follow the precipitation of Al3Sc during the ageing of an Al-0.06 at.% Sc alloy via the two fully resolved peaks, corresponding to Sc in the solid solution Al matrix and to Sc in the precipitate phase. The ordering of the precipitate phase particles formed during ageing at a sequence of temperatures has been observed. The solvus line of the Al-rich end of the Al-Sc phase diagram is determined by measuring the intensity of the signal from the Sc atoms in the matrix relative to the signal from the Sc atoms in the precipitate phase for an Al-0.29 at.% Sc alloy homogenized at different temperatures. The high detection sensitivity of Sc-45 for NMR is demonstrated.

    Originele taal-2English
    Pagina's (van-tot)1111-1125
    Aantal pagina's15
    TijdschriftPhilosophical Magazine A-Physics of Condensed Matter Structure Defects and Mechanical Properties
    Volume80
    Nummer van het tijdschrift5
    StatusPublished - mei-2000

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