Motion and removal behavior of inclusions in electrode tip during magnetically controlled electroslag remelting:X-ray microtomography characterization and modeling verification

• 作者: Yifeng Guo Zhibin Xia Qiang Li Mingyue Sun Weifeng Liu Shaogang Wang Zhe Shen Tianxiang Zheng Biao Ding Yunbo Zhong
• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2022,（1）
• 页码范围: 1-10
• 页数: 10页
• 语种: 英文

摘要

Detailed three-dimensional (3D) microtomography characterizations of inclusions in electrode matrix,mushy zone (MZ) and liquid melt film (LMF) were performed to elucidate the motion and removal behav-ior of inclusions in electrode tip during magnetically controlled electroslag remelting (MC-ESR) process.A transient 2D numerical model was also built to verify the experimental results and proposed mechanisms.The number and size of inclusions exhibited an obvious increasing trend from edge to mid region in LMF,while remained almost the same in electrode matrix and MZ.The inclusions in LMF migrated from edge to mid region of LMF,accompanied with removal process.In addition,the kinetic conditions for inclu-sion migrating to LMF/slag interface (LSI) were enhanced during MC-ESR process,thereby improving the inclusion removal efficiency in LMF.This work highlights the 3D characterization and motion/removal mechanisms of inclusions in electrode tip,as well as sheds new light on preparing high purity materials.