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色金属学报, 2001, 11(4): 547-552.NI Hong-jun, SUN Bao-de, JIANG Hai-yan, DING Wen-jiang. Effect of new flux including rare earth on A356 alloy[J]. The Chinese Journal of Nonferrous Metals, 2001, 11(4..., respectively. 0.1%-0.3% RE addition makes eutectic temperature and nucleation temperature of primary α(Al) fall down, and lowers the eutectic reaction releasing heat. Key words:A356 Al alloy; rare earth......
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Effects of chill casting processes on secondary dendrite arm spacing and densification of Al-Si-Mg alloy MI Guo-fa(米国发)1, LIU Xiang-yu (刘翔宇)1, ZHU Zhao-jun(朱兆军)2, WANG Hong-wei(王宏伟)2 1. School...; Abstract: Based on the resin bonded sand casting process, the effects of chill processes on the secondary dendrite arm spacing(SDAS) and densification of Al-Si-Mg alloy were......
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as-cast microstructures on the subsequent solution-treatment process. The experimental results show that the secondary dendrite arm spacing (SDAS) of primary α(Al), the size of eutectic Si and the volume... the microstructures, the secondary dendrite arm spacing (SDAS) of primary α(Al) as a function of cooling rate and solidification time, and the shape-factor parameters of eutectic Si as a function of cooling rate......
Effect of local chilling on morphology of primary α(Al) in semi-solid A356 alloy LIU Zheng(刘 政)1, 2, MAO Wei-min(毛卫民)2, ZHAO Zhen-duo(赵振铎)2 1. Faculty of Material and Chemical Engineering...; Abstract: The semi-solid slurry of A356 alloy was prepared by low superheat pouring and slightly electromagnetic stirring, in which a pure copper rod was used to produce local chilling......
; Abstract: The relationship between primary dendrite arm spacing and sample diameter was studied during directional solidification for Al-4%Cu (mass fraction) alloy. It is shown... with sample diameter. For given alloy, the primary dendrite arm spacing is just correlated with growth rate v and thermal gradient G. What’s more, it is inverse to thermal gradient. Therefore......
=117μm1.27·s-0.27 and the primary dendritic arm spacing (λ) with the growth rate has a relation of λv0.208=153.8μm1.208·s-0.208 as the growth rate increases from 3 to 300μm/s.
Key words: Cu-75%Sn alloy; peritectic alloy; directional solidification; primary dendritic arm spacing CLC number: TG132.32
Document code: A
the surface oxide film compact, and restrains the aluminum exposed to water, so reduces the hydrogen content of A356 alloy melt.
Key words: A356 aluminum alloy; rare earth elements; surface oxide film... alloy [J]. Acta Metallurgica Sinica, 1993, 29: A16-A19. (in Chinese)
[6] NI Hong-jun, SUN Bao-dem, JIANG Hai-yan, DING Wen-jiang. Effect of new flux including rare on A356 alloy[J]. The Chinese Journal......Influence of additive element on surface oxide film of A356 alloy
来源: 《中国有色金属学报(英文版)2006年第z3期》——欧阳志英 梁红玉 毛协民 红梅