Morphology transition of eutectic carbide assisted by thermoelectric magnetic force during the directional solidification of M2 high-speed steel. (9th August 2021)

• Record Type: Journal Article
• Authors: Zheng, Tianxiang; Li, Wanqin; Qi, Wentao; Xia, Zhibin; Li, Qiang; Shen, Zhe; Guo, Yifeng; Zhong, Yunbo; Wang, Hui; Wang, Qiuliang
• Is Part Of: Ironmaking & steelmaking. Volume 48:Number 7(2021)
• Page Start: 885
• Page End: 892
• Publication Date: 2021-08-09
• Subjects: M2 high-speed steel -- eutectic carbide -- thermoelectric magnetic force -- segregation -- microhardness -- directional solidification -- microstructure -- ransverse magnetic field; Iron industry and trade -- Periodicals; Steel industry and trade -- Periodicals; 669.1
• DOI: 10.1080/03019233.2021.1886635
• Languages: English
• ISSNs: 0301-9233

Abstract

ABSTRACT: The morphology of eutectic carbide was studied by application of a transverse static magnetic field (TSMF) during the directional solidification of M2 high-speed steel. The results show that the morphology of eutectic carbide changed from lamella to fibre as the magnetic flux density (MFD) increased from 0 to 1 T. The transformation from lamella to fibre has been enhanced by the increasing MFD. Solute elements moved and gathered at a certain region in the mushy zone when imposing a TSMF. In the mushy zones, channel segregations were formed in the samples treated by 0.2 and 0.4 T TSMF. When the MFD increased to 0.8 and 1 T, the channel segregation disappeared. Morphology transition, solute elements movement and formation of channel segregation were attributed to the thermoelectric magnetic force (TEMF). This work provides a new method to control the distribution of carbides in steel assisted by TEMF.