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金属学报  2006 

半固态A356铝合金的稳态流变性能

, PP. 163-166

Keywords: A356铝合金,表观粘度,固相分数

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Abstract:

采用Couette型同轴双筒流变仪对半固态A356铝合金的等温稳态表观粘度进行了测试.结果表明半固态A356合金的稳态表观粘度(ηa)随着固相分数(fs)的增加而增加,但随剪切速率(γ)的增大而减小,当fs达到某一临界值之后,ηa迅速增加.可用方程ηa=2.79exp(6.27fs)γ-0.7描述fs,γ对ηa的影响.

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