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《Journal of University of Science and Technology Beijing》 2007-S1
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Experimental study on time correlation of treating time and electric pulse modifying effects on Sn-15%Pb alloy

WANG Jingsong1, 2), YU Wentao3), TANG Peixin1), LIU Bo1), CAO Lijun1) , XUE Qingguo1) 1) Metallurgical and Ecological Engineering School, University of Sciences and Technology Beijing, Beijing 100083, China 2) Post-doctoral Station of USTB, Post-doctoral Work Station of Laigang Group, Shandong 271104, China 3) Qian’an ShouGang Co. Ltd., Hebei 064404, China  
Molten Sn-15%Pb alloy, which was used as the test material, was treated with electric pulse for different treating time under the condition of 90℃ overheating. The modifying effects on solidification process and structures were investigated by thermal analysis and solidification structure observation. The results showed that the solidification structures of Sn-15%Pb alloy were changed significantly after electric pulse modifying. The morphology of primary crystal enriched Sn changed from dendrite to cellular. Corresponding with the changing of solidification structures, the cooling curves were changed significantly. The lowest temperature of primary crystallizing increased in a rather large range. With the increasing of electric pulse process time, the amount of cellular primary crystal changed periodically, that is little, large, little, large. At the same time, the lowest temperature of primary crystallizing also changed periodically with the extension of electric pulse treating time.
【Fund】: 国家自然科学基金;; 上海宝钢集团公司联合资助(50474074)
【CateGory Index】: TG113.12
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1 SHI Xiangdong1,2), WANG Jingsongl),XUE Qingguo1),CANG Daqiang1), WANG Liping3), and WU Shupiao3)1) Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China2) Sinosteel Sci-Tech Development Company, Beijing 100031, China3) Shijiazhuang Iron and Steel Co. Ltd., Shijiazhuang 050031, China;Effect of electric pulse treatment on solidification structure of an Al-15%Si alloy[J];稀有金属(英文版);2005-03
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