Effect of ball milling on structure and thermal stability of Al 84Gd6Ni7Co3 glassy powders

Z. Wang, K. G. Prashanth, S. Scudino, J. He, W. W. Zhang, Y. Y. Li, M. Stoica, G. Vaughan, D. J. Sordelet, J. Eckert

    Research output: Contribution to journalArticlepeer-review

    21 Citations (Scopus)

    Abstract

    The influence of ball milling on microstructure and thermal stability of the gas-atomized Al84Gd6Ni7Co3 glassy powder has been investigated as a function of the milling time. The results show that the traces of crystalline phases present in the as-atomized powder decrease gradually with increasing the milling time. The thermal stability of the fcc-Al primary phase increases while the thermal stability of the intermetallic phases decreases with increasing milling. Moreover, significant improvement in hardness occurs after milling, which is attributed to the amorphization of the residual crystalline phases present in the as-atomized powder. These results demonstrate that milling is an effective way for amorphizing the residual crystalline present in the amorphous matrix and to control the thermal stability of the material.

    Original languageEnglish
    Pages (from-to)97-102
    Number of pages6
    JournalIntermetallics
    Volume46
    DOIs
    Publication statusPublished - 2014 Mar

    Keywords

    • A. Intermetallics, miscellaneous
    • B. Thermal stability
    • C. Mechanical alloying and milling
    • F. Diffraction

    ASJC Scopus subject areas

    • Chemistry(all)
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

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