Research on Heat Transfer during LFEC Processing by In-situ Temperature Measurement

摘要：

Low-frequency electromagnetic casting (LFEC) processing could improve not only the metallurgical quality of magnesium billet including refining grain size, reducing regional microstructural difference and lightening segregation, but also its surface quality due to the effect of applied electromagnetic field according to the results by microstructure observation and the numerical simulation. In this research in-situ temperature measurement was carried out in LFEC processing in order to investigate heat transfer behavior of billet during solidification. The effects of the electromagnetic conditions (frequency and the intensity) together with the casting temperature on the sump and the mushy zone were investigated in detail. The results indicate that all the casting conditions affect the temperature field of magnesium billet markedly during solidification. Electromagnetic field could decrease not only the sump depth but also the difference of regional temperature field along the solidification direction leading to much more uniform cooling rate.

关键词： magnesium alloy LFEC processing in-situ temperature measurement heat transfer

作者: LE Qi-Chi ZHANG Zhi-Qiang RU Li-Li CUI Jian-Zhong

作者单位: Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University;S Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University;

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 300-304

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）