Viscous flow and microforming of a Zr-base bulk metallic glass

Jason S.C. Jang, C. F. Chang, Y. C. Huang, J. C. Huang, W. J. Chiang, C. T. Liu

研究成果: 雜誌貢獻期刊論文同行評審

22 引文 斯高帕斯(Scopus)

摘要

The thermal plastic deformation behavior of the (Zr53Cu30Ni9Al8)99.5Si0.5 bulk metallic glass (BMG) was studied by means of thermo mechanical analysis (TMA) and high-temperature compression test in the supercooled liquid region. Using the result obtained from TMA, the deformation behavior for (Zr53Cu30Ni9Al8)99.5Si0.5 BMG rod was investigated by compression test at different strain rates (5 × 10-3∼5 × 10-1 s-1) and temperatures in the supercooled liquid region, specifically at 733 K, 738 K, 743 K, 748 K, and 753 K. The value of flow stress with a constant strain rate of 5 × 10-3 s-1 decreases with increasing temperature and reaches a relatively low flow stress of 36 MPa at the test temperature of 753 K. Conversely, the value of flow stress increases with the strain rate in compression. In this paper, an imprinted hologram pattern with 0.6 μm depth was demonstrated which showed extremely good microforming ability of this (Zr53Cu30Ni9Al8)99.5Si0.5 BMG in the supercooled liquid region.

原文???core.languages.en_GB???
頁(從 - 到)200-204
頁數5
期刊Intermetallics
17
發行號4
DOIs
出版狀態已出版 - 4月 2009

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