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- W2356139049 abstract "The influence of Al-Sr modifier and Zr compound salt on marco/micro structure of near-hypoeutectic Al-Si alloys was investigated. Only the addition of Sr into Al-Si alloys could result in transition of eutectic silicon from coarse plate-like or acicular to fine fibrous, at the same time it had also a better refinement to the structure of alloys. The present of Sr in Al-Si alloys causes the changes of structures of liquid metals, and leads to the decreases of the solid-liquid interfacial energy of dendrite α(Al) and increases of the growth undercooling of dendrite tips. The combined addition of Al-Sr and Zr compound salt, with increaseing the Zr content, the grain size decreases obviously. Finer and evenly equiaxed dendrite α(Al) is attained with addition of 0.35% Zr, and the size of macrostructure grain is about 100120 μm. The Zr in compound salt forms into the Al-Si alloys melt, compared to Al-Zr master alloys, the ability of grain refinement and resistant fading are better than those of Al-Zr master alloys." @default.
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- W2356139049 date "2004-01-01" @default.
- W2356139049 modified "2023-09-25" @default.
- W2356139049 title "Grain refinement for near-hypoeutectic Al-Si alloys" @default.
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