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	On-line preparation technology of semi-solid slurry of A356.2 alloy
	Feng Peng-fa ; Tang Jing-lin ; Li Shuang-shou ; Zeng Da-ben
	2010-05-10 ; 2010-05-10
关键词	Experimental/ aluminium alloys boron alloys cooling die casting grain refinement grain size slurries strontium alloys titanium alloys/ on-line multiple semisolid preparation technology A356.2 alloy reversible multilevel-speed electromagnetic stirring melt treatment die casting cooling rate slurry preparation time pouring temperature alpha -Al grain morphologies grain refinement processing parameters grain diameter shape factor stirring frequency one-way stirring time 220 V 5 s 67 s AlTiSrB/ A8120G Preparation of metals and alloys (compacts, pseudoalloys) A6480G Microstructure A8270K Emulsions and suspensions/ voltage 2.2E+02 V time 5.0E+00 s time 6.7E+01 s/ AlTiSrB/ss Al/ss Sr/ss Ti/ss B/ss
中文摘要	Using the self-developed reversible multilevel-speed electromagnetic stirrer, the multiple semi-solid preparation technology of melt treatment and reversible electromagnetic stirring was studied. The results show that the technology, with high preparation efficiency, can realize the on-line preparation of semi-solid slurry of A356.2 alloy, i.e. the preparation efficiency fits the subsequent die casting procedure. With the faster cooling rate, the slurry preparation time can be largely reduced by decreasing pouring temperature. Under the condition of the faster cooling rate and smaller stirring speed, elevated stirring frequency not only strongly promotes to modify the morphologies of alpha (Al) grains, but also has considerable effects on grain refinement. Following the processing parameters below, the A356.2 alloy slurry with grain diameter of 80 - 90 mu m and shape factor of 0.8 or more can be obtained: melt treatment with the additions of 0.03%Ti(Al-5Ti-B) (mass fraction) and 0.04%Sr(Al-10Sr), reversible two-way stirring without interval, pouring temperature of 640 degrees C, stirring frequency of 25 - 30 Hz, output voltage of 220 V, one-way stirring time of 5 s, total stirring time of 67 s.
语种	中文 ; 中文
出版者	Editorial Office of Chinese J. Nonferrous Met ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/24178]
专题	清华大学
推荐引用方式 GB/T 7714	Feng Peng-fa,Tang Jing-lin,Li Shuang-shou,et al. On-line preparation technology of semi-solid slurry of A356.2 alloy[J],2010, 2010.
APA	Feng Peng-fa,Tang Jing-lin,Li Shuang-shou,&Zeng Da-ben.(2010).On-line preparation technology of semi-solid slurry of A356.2 alloy..
MLA	Feng Peng-fa,et al."On-line preparation technology of semi-solid slurry of A356.2 alloy".(2010).

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