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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50003

    Title: The study of loading rate effect of a Cu-based bulk metallic glass during nanoindentation
    Authors: Chen,KW;Jian,SR;Wei,PJ;Jang,JSC;Lin,JF
    Contributors: 材料科學與工程研究所
    Date: 2010
    Issue Date: 2012-03-27 16:28:40 (UTC+8)
    Publisher: 國立中央大學
    Abstract: In this study, the nanoindentation behavior of a Cu-Zr-Al-Ag bulk metallic glass was investigated at various loading rates. It is found that the load-displacement curve of indentation exhibits a significant serration of displacement jumps (pop-ins). The experiment data show that the depths of the pop-in site are a geometric series. The size of pop-ins increases with indentation depth but decreases with loading rate; a larger applied loading rate leads to smaller pop-ins during the indentation process. However, the experimental results indicate that the loading rate has no influence on the depth ratio of pop-in sites. FIB observation and TEM diffraction patterns show that the microstructure of the BMG material remained amorphous irrespective of the presence shear bands. (C) 2010 Elsevier B.V. All rights reserved.
    Appears in Collections:[材料科學與工程研究所 ] 期刊論文

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