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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 1    February 2006

    

    

Effect of pouring temperature on semi-solid slurry of
A356 Al alloy prepared by weak electromagnetic stirring
LIU Zheng(刘 政) 1, 2, MAO Wei-min(毛卫民)1, ZHAO Zheng-duo(赵振铎)1

1. School of Materials Science and Engineering, University of Science and
Technology Beijing,Beijing 100083, China;
2. Faculty of Material and Chemical Engineering, Jiangxi University of Science
and Technology,Ganzhou 341000, China

Abstract:The semi-solid slurry of A356 Al alloy was manufactured by low superheat pouring and weak electromagnetic stirring. The effects of pouring temperature on the slurry manufactured by weak electromagnetic stirring were researched. The results indicate that it is feasible to manufacture the slurry with particle-like primary phases by low superheat pouring and weak electromagnetic stirring, and there is an important effect of the pouring temperature (superheat temperature) on the morphology and the size of primaryα-Al in A356 Al alloy. By the action of suitable weak electromagnetic stirring, increasing pouring temperature to put low superheat pouring in practice is capable of obtaining semi-solid slurry of A356 Al alloy with particle-like primary phase. Compared with the samples made only by low superheat pouring without stirring, raising pouring temperature by 15-35 ℃ above the liquidus temperature under condition of weak electromagnetic stirring can ensure the same grain size and morphology of the primary phase.

 

Key words: A356 Al alloy; semi-solid slurry; low superheat pouring; weak electromagnetic stirring

ISSN 1672-7029
CN 43-1423/U

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