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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
    Keywords: SHEAR-BAND FORMATION;MECHANICAL-PROPERTIES;PLASTIC-DEFORMATION;SERRATED FLOW;INDENTATION;ALLOYS
    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.
    Relation: JOURNAL OF ALLOYS AND COMPOUNDS
    Appears in Collections:[材料科學與工程研究所 ] 期刊論文

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