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对传统的静态剪切试验装置进行改进 ,研究了不同初生相形态半固态A35 6合金的流变性能。结果表明 ,半固态A35 6合金的初生相形态对其静态流变行为有显著的影响。具有枝晶初生相组织的半固态A35 6合金的流变特征符合五元件模型 (H1-〔N1/H2 〕 -〔N2 /S〕) ,具有退化枝晶初生相组织的半固态A35 6合金符合六元件模型 (〔H1/S1〕-〔N1/H2 〕 -〔N2 /S〕)。计算结果表明 ,具有退化枝晶初生相组织的半固态A35 6合金的变形能力和剪切率远大于具有枝晶组织初生相的半固态合金
The traditional static shear test device was modified to study the rheological properties of different primary phase morphology of semi-solid A356 alloy. The results show that the morphology of the primary phase of the semi-solid A356 alloy has a significant effect on the static rheological behavior. The rheological characteristics of the semi-solid A356 alloy with dendritic primary phase complied with the five-element model (H1- [N1 / H2] - [N2 / S]) and the semi-solid A356 alloy with degenerate dendritic primary phase Six-element model ([H1 / S1] - [N1 / H2] - [N2 / S]). The calculated results show that the deformability and shear rate of the semi-solid A356 alloy with degenerate dendrites primary phase are much larger than those of the semi-solid alloy with dendrite primary phase