Annealing embrittlement of Al89Fe10Zr1 amorphous alloy

Limin Wang, Liqun Ma, Mingwei Chen, Hisamichi Kimura, Akihisa Inoue

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    The mechanism of annealing embrittlement of Al89Fe10Zr1 amorphous alloy is studied. The activation energies for the ductile-brittle transition (Eb) and the precipitation of fcc-Al (Ex) are measured according to Kissinger plot and Arrhenius plot. Their values are Eb = 168-179 kJ mol-1 and Ex = 173-204 kJ mol-1, respectively. The correlation between the ductile-brittle transition and the precipitation of fcc-Al means that they are the same thermally activated processes. The analysis of solute concentrations in the alloy using atom probe field ion microscope shows that the precipitation of fcc-Al causes the increase of Fe and Zr concentrations in the residual amorphous phase during the annealing process. This is the main reason for the ductile-brittle transition.

    Original languageEnglish
    Pages (from-to)182-185
    Number of pages4
    JournalMaterials Science and Engineering A
    Volume325
    Issue number1-2
    DOIs
    Publication statusPublished - 2002 Feb 28

    Keywords

    • Activation energy
    • Al-based amorphous alloy
    • Annealing embrittlement
    • Atom probe

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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