Effects of Antimony on Grains and Eutectic Si of Hypoeutectic Al-Si Alloy under Gravity Sand Casting Conditions AITranslate
Abstract AITranslate
The effects of antimony(Sb) on grains and eutectic Si of hypoeutectic Al-Si alloy under gravity sand casting conditions were investigated by solidification temperature-time curves,polarized light microscope(PLM),scanning electron microscope(SEM),electron backscattered diffraction(EBSD),transmission electron microscope(TEM),and energy disperse spectroscope(EDS).The results show that the addition of Sb to the Al-7Si alloy results in a decrease in the nucleation temperature of primary α-Al grains and eutectic Si.The nucleation of primary α-Al grains becomes more difficult,and their average size increases from 319 μm to 353 μm.The mechanism of Sb modifying eutectic Si is that with Sb addition,the nucleation temperature of eutectic Si decreases,the solid solubility of Si in α-Al decreases,the chemical potential increases,the velocity of Si atoms discharging from α-Al increases,the growth rate of eutectic Si increases,and finally the eutectic Si becomes shorter and narrower.Sb does not play its role of modification by acting on the nucleation cores and twins of eutectic Si.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.21[金属学及工艺—金属材料]
Citation Information:
The effects of antimony(Sb) on grains and eutectic Si of hypoeutectic Al-Si alloy under gravity sand casting conditions were investigated by solidification temperature-time curves,polarized light microscope(PLM),scanning electron microscope(SEM),electron backscattered diffraction(EBSD),transmission electron microscope(TEM),and energy disperse spectroscope(EDS).The results show that the addition of Sb to the Al-7Si alloy results in a decrease in the nucleation temperature of primary α-Al grains and eutectic Si.The nucleation of primary α-Al grains becomes more difficult,and their average size increases from 319 μm to 353 μm.The mechanism of Sb modifying eutectic Si is that with Sb addition,the nucleation temperature of eutectic Si decreases,the solid solubility of Si in α-Al decreases,the chemical potential increases,the velocity of Si atoms discharging from α-Al increases,the growth rate of eutectic Si increases,and finally the eutectic Si becomes shorter and narrower.Sb does not play its role of modification by acting on the nucleation cores and twins of eutectic Si.
quote
| GB/T 7714-2015 | [1] MAO Guo-ling, PU Bo-wen, WANG Gen-quan, et al. Effects of Antimony on Grains and Eutectic Si of Hypoeutectic Al-Si Alloy under Gravity Sand Casting Conditions[J]. Rare Metals and Cemented Carbides, 2023(4): 83-87. |
| MLA | [1] MAO Guo-ling, et al., "Effects of Antimony on Grains and Eutectic Si of Hypoeutectic Al-Si Alloy under Gravity Sand Casting Conditions." Rare Metals and Cemented Carbides, no. 4, 2023, pp. 83-87. |
| APA | [1] MAO Guo-ling, PU Bo-wen, WANG Gen-quan, YANG Chen-fan, ZHOU Hai-tao, & HE Xiao-dong. (2023). Effects of Antimony on Grains and Eutectic Si of Hypoeutectic Al-Si Alloy under Gravity Sand Casting Conditions. Rare Metals and Cemented Carbides(4), 83-87. |
| IEEE | [1] MAO Guo-ling, PU Bo-wen, WANG Gen-quan, YANG Chen-fan, ZHOU Hai-tao, and HE Xiao-dong, "Effects of Antimony on Grains and Eutectic Si of Hypoeutectic Al-Si Alloy under Gravity Sand Casting Conditions," Rare Metals and Cemented Carbides, no. 4, pp. 83-87, 2023. keywords: {gravity sand casting;Al-Si alloy;Sb modification;primaryα-Al grain;eutectic Si} |