Effect of a transverse magnetic field on solidification structure in directionally solidified Al–40 wt% Cu alloys. Issue 2 (11th January 2016)

• Record Type: Journal Article
• Authors: Li, Hanxiao; Du, Dafan; Gagnoud, Annie; Fautrelle, Yves; Moreau, Rene; Li, Xi
• Is Part Of: Journal of materials research. Volume 31:Issue 2(2016)
• Page Start: 213
• Page End: 221
• Publication Date: 2016-01-11
• Subjects: directionally solidification, -- microstructure, -- thermoelectric; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1557/jmr.2015.396
• Languages: English
• ISSNs: 0884-2914

Abstract

Abstract: Abstract : Effect of a transverse magnetic field on macrosegregation and growth of primary Al2 Cu dendrites in directionally solidified Al–40 wt% Cu alloys was investigated experimentally. The experimental results indicated that the magnetic field caused the formation of channel-like and freckle segregations. It was also found that the application of the magnetic field benefited the growth of primary Al2 Cu dendrites and the axial segregation. Moreover, the magnetic field decreased the primary dendrite spacing and the mushy zone length; however these effects weakened with the increase of the magnetic field intensity. The above experimental results should be attributed to the formation of the thermoelectric magnetic convection during directional solidification under the transverse magnetic field.