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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 3    June 2003

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Solidification of Al alloys under electromagnetic field
CUI Jian-zhong(崔建忠)

Key Laboratory of Ministry of Education for
Electromagnetic Processing of Materials, 
Northeastern University, Shenyang 110004, China

Abstract:New theories and technology in the electromagnetic field were put forward about DC casting of Al alloys, including the fundamental research works, i.e, effects of the electromagnetic field on solidus and liquidus, macrosegregation of the main alloying elements, microstructures, content of alloying elements in grains and grain size after solidification under electromagnetic field, and also including a new process-DC casting under low frequency electromagnetic field(LFEMC), which can refine microstructure, eliminate macrosegregation, increase the content of alloying elements within grains, decrease the residual stress, avoid cracks and improve surface quality, and another new process-DC casting under low frequency electromagnetic vibration(LFEVC), which is a high effective method for grain refining.

 

Key words:  Al alloy; electromagnetic field; frequency; intensity; solidus; liquidus; content of alloying elements; macrosegregation; residual stress; surface quality

ISSN 1672-7029
CN 43-1423/U

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