Structure of Mechanically Milled CNT-Reinforced Al-Alloy Nanocomposites

    Authors

    N. Al-Aqeeli; K. Abdullahi; C. Suryanarayana; T. Laoui;S. Nouari

    Comments

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    Abbreviated Journal Title

    Mater. Manuf. Process.

    Keywords

    Aluminum composite; Carbon nanotubes; Characterization; Mechanical; milling; Morphology; MG-SI ALLOYS; CARBON NANOTUBES; ALUMINUM COMPOSITES; AL-AL2O3 COMPOSITE; MATRIX COMPOSITES; POWDERS; MICROSTRUCTURE; MORPHOLOGY; Engineering, Manufacturing; Materials Science, Multidisciplinary

    Abstract

    Mechanical milling of aluminum-based two Al-Si-Mg alloys were reinforced with multiwalled carbon nanotubes (CNTs) using a planetary ball mill, forming a nanocomposite structure. The milling took place for different timings of 1, 3, and 5h to follow the dispersion and distribution of CNTs. The effects of concentration of CNTs (ranging from 0.5 to 2wt%) and milling periods on the final microstructure of the composites were investigated. The mechanically milled powders were investigated by X-ray diffractometer (XRD), scanning electron microscope (SEM), and particle size analyzer. The crystallite size and the accumulating internal strains increased with milling time, and the smallest grain sizes achieved were about 100nm. The results showed that milling was able to adequately disperse CNTs in the aluminum alloy matrices at different mechanical milling times and range of CNT concentrations.

    Journal Title

    Materials and Manufacturing Processes

    Volume

    28

    Issue/Number

    9

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    984

    Last Page

    990

    WOS Identifier

    WOS:000324611900004

    ISSN

    1042-6914

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