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Severe plastic deformation of an as-cast hypoeutectic Al–Si alloy

机译:铸态亚共晶Al-Si合金的严重塑性变形

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摘要

Different equal channel angular pressing (ECAP) processing routes have been employed to investigate the flow plane microstructures in a hypoeutectic Al–7wt%Si. In the as-cast condition, this alloy exhibits equiaxed primary aluminum dendrite cells embedded in an Al–Si eutectic constituent. The observed microstructures have been compared to the predicted distortion of a volume element expected during idealized ECAP. The effect of different processing routes on the microstructure refinement, degree of homogenization of second phase particles, and associated mechanical properties are discussed.
机译:已采用不同的等通道角挤压(ECAP)工艺路线来研究亚共晶Al-7wt%Si中的流平面微观结构。在铸态条件下,这种合金表现出等轴的原生铝枝晶细胞嵌入Al-Si共晶成分中。已将观察到的微观结构与理想化ECAP期间预期的体积元素的预计变形进行了比较。讨论了不同工艺路线对组织细化,第二相颗粒均质化程度和相关机械性能的影响。

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