Abstract：The mechanical effect, thermal effect and magnetic potential energy induced by pulse electromagnetic field can significantly improve the microstructure and properties of aluminum alloy semicontinous casting. Meanwhile, pulse electromagnetic casting technology in green production, intelligent control and other aspects closely meet the national strategic requirements of “low-carbon metallurgy”. The research results of pulsed electromagnetic field in casting grain refinement, microstructure evolution and precipitate refinement were reviewed. The coupling mechanism between the properties of pulsed electromagnetic field and phase transformation of materials was analyzed, and a preliminary conception of controlling solidification and precipitation of phase transformation microstructure by pulsed electromagnetic field is put forward to meet the quality requirements of high quality aluminum alloy microstructure. The pulsed electromagnetic field technology of melt surface based on theory and its industrial practice in multi-gauge semi-continuous casting are introduced,such as 7XXX(φ203)、6XXX(φ380)、Al-Si(φ120). Pulsed electromagnetic field is expected to play a greater role in many metallurgical processes such as casting and thermal care in the future.
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2022, Vol. 41 
