旋转交变磁场和静磁场对Al-18%Si合金变质处理的影响  

Effect of Rotary Magnetic & Static Magnetic Field on Modification of Al-18% Si Alloy

作　　者：连峰[1] 李廷举[2] 

机构地区：[1]大连海事大学机电与材料工程学院,辽宁大连116026 [2]大连理工大学材料工程学院,辽宁大连116024

出　　处：《热加工工艺》2007年第17期30-32,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(50234020)

摘　　要：分别研究了旋转磁场和静磁场对过共晶Al-18%Si合金变质处理的影响。结果表明:变质处理后,不施加磁场的条件下,块状初晶Si偏聚在试样边缘处,试样中心处为共晶Si;施加旋转交变磁场的条件下,粗大的板条状初晶Si偏聚在试样边缘处,试样中心处为共晶Si;施加静磁场的条件下,在试样整个横断面上初晶Si都是细小的块状,且大小和分布均匀。The effects of rotary magnetic field and static magnetic field on P-salt modification of Al-18%Si alloy were studied. The results show that, without magnetic field, the plate-like primary Si concentrates at the edge of the sample, and the center is concentrated with the eutectic Si;exerting rotary magnetic field on the P-Salt modified hypereutectic Al-1 8%Si alloy, the primary Si is thick and block-like and concentrates at the edge of the sample, and the center concentrates with the eutectic Si;exerting static magnetic field on the P-Salt modified hypereutectic Al-18%Si alloy, the primary Si is in fined block and the distribution is even.

关 键 词：旋转磁场 静磁场 初晶SI 共晶Si 变质处理 

分 类 号：TG243.2[金属学及工艺—铸造]