| 題名: | The study of loading rate effect of a Cu-based bulk metallic glass during nanoindentation |
| 作者: | Chen,KW;Jian,SR;Wei,PJ;Jang,JSC;Lin,JF |
| 貢獻者: | 材料科學與工程研究所 |
| 關鍵詞: | SHEAR-BAND FORMATION;MECHANICAL-PROPERTIES;PLASTIC-DEFORMATION;SERRATED FLOW;INDENTATION;ALLOYS |
| 日期: | 2010 |
| 上傳時間: | 2012-03-27 16:28:40 (UTC+8) |
| 出版者: | 國立中央大學 |
| 摘要: | 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. |
| 關聯: | JOURNAL OF ALLOYS AND COMPOUNDS |
| 顯示於類別: | [材料科學與工程研究所 ] 期刊論文
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