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首页> 外文期刊>Journal of Materials Engineering and Performance >Effects of Processing Parameters on Microstructure Evolution of Al-7Si-Mg Alloy by Cooling Slope Casting
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Effects of Processing Parameters on Microstructure Evolution of Al-7Si-Mg Alloy by Cooling Slope Casting

机译：工艺参数对冷倾斜铸造Al-7Si-Mg合金组织演变的影响

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摘要

This work investigates the effects of pouring temperature, slope length, and slope temperature in cooling slope casting on the formation of globular microstructure of Al-7Si-Mg alloy. The remnant alloy on the slope during casting was quenched and characterized at different stages of flow to evaluate the microstructure features developed in cooling slope casting. The primary alpha-Al dendritic phase found in conventional cast alloy was transformed into globular shape in slope-processed cast alloy. Finer and more homogenous primary alpha-Al phase was formed at lower pouring temperature (625 degrees C). The effect of slope length on microstructure of Al-7Si-Mg alloy was significant at high pouring temperatures (640 and 660 degrees C) but was not visible at low pouring temperature (625 degrees C). The microstructure of alloy became coarser with increasing slope temperature.
机译：这项工作研究了冷却倾斜铸件中浇铸温度，边坡长度和边坡温度对Al-7Si-Mg合金球状微结构形成的影响。浇铸过程中在边坡上残留的合金经过淬火并在流动的不同阶段进行表征，以评估在冷却边坡铸造中形成的微观组织特征。常规铸造合金中发现的主要α-Al树枝状相在倾斜加工的铸造合金中转变为球状。在较低的浇铸温度（625摄氏度）下形成了更细，更均匀的初级α-Al相。倾斜长度对Al-7Si-Mg合金微观结构的影响在高浇注温度（640和660摄氏度）下很明显，但在低浇注温度（625摄氏度）下看不到。随着斜率温度的升高，合金的显微组织变得更加粗糙。

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