FCC Surface Precipitation in Cu-Zn-Al after Low Angle GA<SUP>+</SUP> Ion Irradiation

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  • FCC surface precipitation in Cu-Zn-Al after low angle GA[+] ion irradiation

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The precipitation of a disordered FCC surface structure after low angle Ga+ ion irradiation during focused ion beam thinning of a B2 Cu-Zn-Al alloy with e⁄a=1.48 is reported. Conventional as well as high-resolution transmission electron microscopy techniques reveal FCC layers on both sides of the thinned sample. The occurrence of this structure is attributed to disordering and dezincification of the alloy resulting from the sputtering process during the irradiation. Changes in crystallographic sample orientation with respect to the incoming ion beam do not have a significant effect on the appearance of the FCC surface structure.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 51 (12), 2177-2180, 2010

    The Japan Institute of Metals and Materials

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