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《Shanghai Metals》 2015-04
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REFINEMENT MECHANISM STUDY OF COMMERCIAL PURE Al UNDER PULSED MAGNETO OSCILLATION

Li Qixin;Yu Jihao;Liang Dong;Zhang Zhichen;Gong Yongyong;Shanghai Key Laboratory of Modern Metallurgy & Materials Processing,Shanghai University;College of Science,Shanghai University;  
The refinement mechanism of commercial pure Al under pulsed magneto oscillation was investigated by putting the metal gauze into the mold. The results indicated that a large amount of nuclei can be formed at the mold wall,on the surface of melt and solid / liquid interface. The technology of PMO utilizes high frequency changing electromagnetic field to induce changing electromagnetic force in the melt. The force can reduce the temperature gradient in the melt,thus increasing the surface of forming nuclei. Besides,the force can also accelerate the nuclei to separate from the surface of the melt and solid / liquid interface to the melt.
【Fund】: 国家973项目(大型铸锭的均质化凝固控制)(No.2011CB012902)
【CateGory Index】: TG292
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