التفاصيل البيبلوغرافية
| العنوان: |
Improved plasticity of a ZrCuAlAg bulk metallic glass by controlling the casting condition. |
| المؤلفون: |
Zhang, Xianfeng, Xu, Kuilong, Yang, Xiao, Cui, Xiao, Bian, Bingchuan, Zhang, Xinyao, Hou, Shizhong, Chen, Jieming |
| المصدر: |
AIP Advances; Jul2021, Vol. 11 Issue 7, p1-9, 9p |
| مصطلحات موضوعية: |
METALLIC glasses, MATERIAL plasticity, TRANSMISSION electron microscopes, LOW temperatures |
| مستخلص: |
A series of Zr50.75Cu35.75Al8.5Ag5 bulk metallic glasses (BMGs) were prepared by controlling the cooling rate and over-heating temperature. The plastic deformation behavior of the BMGs was examined. The plasticity was enhanced when the BMG was prepared at a high cooling rate and low over-heating temperature. The plasticity of the Zr-based BMGs prepared under different casting conditions was discussed based on the amount of free volume. The structural heterogeneity of the BMGs prepared with different over-heating temperatures was examined using a high-resolution transmission electron microscope and mapped by using an energy dispersive x-ray spectroscope. The results showed that a low over-heating temperature could increase the degree of heterogeneity, but an extremely low over-heating temperature could lead to nanocrystallization. The difference in the heterogeneous structures caused the distinct plastic performance of the Zr50.75Cu35.75Al8.5Ag5 BMGs prepared with different over-heating temperatures. [ABSTRACT FROM AUTHOR] |
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