Morphology Tailoring and Enhanced Inclusion Removal of Liquid Melt Film by Regulating the Magnetic Flux Density During Magnetic Controlled ESR Process

• Published in: Metallurgical and materials transactions. B, Process metallurgy and materials processing science Vol. 52; no. 5; pp. 3383 - 3392
• Main Authors: Guo, Yifeng, Ma, Chengkuan, Xia, Zhibin, Qi, Wentao, Li, Qiang, Zheng, Tianxiang, Shen, Zhe, Ding, Biao, Liu, Chunmei, Zhong, Yunbo
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.10.2021; Springer Nature B.V
• Subjects: Bearing steels; Characterization and Evaluation of Materials; Chemistry and Materials Science; Droplets; Electroslag melting; Electroslag remelting; Flux density; Inclusions; Industrial applications; Magnetic flux; Magnetism; Materials Science; Melting; Metallic Materials; Morphology; Nanotechnology; Original Research Article; Structural Materials; Surfaces and Interfaces; Thin Films
• ISSN: 1073-5615; 1543-1916
• DOI: 10.1007/s11663-021-02268-6

The current study focuses on the influences of magnetic flux density (MFD) on liquid melt film (LMF) morphology and inclusion removal during magnetic controlled electroslag remelting (MC-ESR) process (GCr15 bearing steel). The average thickness of LMF was reduced by 21.0, 33.0 and 41.3 pct, respectively, after applying a 35, 65 and 95 mT transverse static magnetic field (TSMF). This phenomenon can be attributed to the accelerated dynamic process (LMF aggregating to form droplet and droplet dripping) under TSMF condition, which was more obvious as larger MFD was applied. In addition, the kinetic conditions for inclusion removal in LMF were also enhanced with the increase of the MFD (0 to 95 mT), leading to a gradual decrease in the number and size of inclusions in LMF. This work highlights the LMF morphology tailoring and inclusions removal enhancement by regulating the MFD of applied TSMF as well as guides the industrial application of MC-ESR technology.