【摘要】 真空自耗电弧熔炼(VAR)是当前钛合金、镍基高温合金等材料高致密、高均匀、无缺陷大型铸锭的主要熔炼技术。数值模拟已成为理解VAR过程中多种尺度物理现象及指导VAR工艺参数优化的重要手段。本文系统梳理了近20多年来国内外在VAR铸锭凝固数值仿真模型、宏观传输行为、介/微观组织形貌与缺陷演化以及工艺参数对铸锭质量影响4个方面的模拟研究进展，并对本领域存在的不足及未来的发展进行了分析展望。更多还原

【Abstract】 Vacuum arc remelting(VAR) is the principal remelting process for producing high-quality Ti-based alloy and Ni-based superalloy ingots with high density, fine chemical homogeneity, and minimal defects. Numerical modeling plays a crucial role in understanding the mechanisms and dynamics of various phenomena occurring at different scales during the VAR process. It also aids in optimizing operational parameters. In this paper, the development of multiscale simulations for VAR ingot solidification over the last two decades is introduced. The following four aspects are addressed: numerical models at various scales, macroscopic transport phenomena, microstructure and defect evolution, and the effects of process control parameters on the VAR ingot quality. Furthermore, the current limitations in this field and proposed future development directions are discussed.更多还原