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Rheological Behavior of Semi-Solid AlSi6Mg2 Aluminum Alloy at Steady State |
ZHOU Zhihua; MAO Weimin; LIU Zheng; XU Jun; SHI Likai |
School of Materials Science and Engineering;University of Science and Technology Beijing; Beijing 100083 |
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Cite this article:
ZHOU Zhihua; MAO Weimin; LIU Zheng; XU Jun; SHI Likai. Rheological Behavior of Semi-Solid AlSi6Mg2 Aluminum Alloy at Steady State. Acta Metall Sin, 2005, 41(7): 759-762 .
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Abstract The apparent viscosities of semi--solid AlSi6Mg2 alloy
at steady state were investigated
using a Couette type viscometer.
The results show that the apparent viscosities of semi--solid
AlSi6Mg2 alloy at steady state increase with increasing
solid fraction, but decline with increasing
shearing rate. When the solid fraction reaches
a critical value, the apparent viscosities increase rapidly
and with the increase in shearing rate, the critical
fraction value becomes bigger. Based on the
experimental results, an empirical equation
that shows the effect of solid fraction and shearing
rate on the apparent viscosities
was built as the following,a =78.6 exp(6.17 fs)-1.36。
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Received: 11 October 2004
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