贾明灿,皇涛,宋克兴,国秀花,冯江,宋海通

• 1:河南科技大学材料科学与工程学院
• 2:河南省科学院
• 3:中国船舶重工集团公司第七一三研究所

摘要(Abstract)：

针对高速大电流下CuW电弧侵蚀斑点的形成和发展，基于纳维-斯托克斯方程(N-S方程)、麦克斯韦方程组构建二维轴对称磁流体动力学模型，考虑金属材料在高压作用下沸点迁移和蒸发带走的热量及金属蒸汽的反冲压力，描述CuW合金在电弧侵蚀下熔池形成的动态演变过程，通过等效热熔法描述金属相变，用动网格描述CuW电弧斑点侵蚀面演化，模拟CuW金属界面烧蚀过程，根据温度分布、烧蚀坑形貌分析电弧的热、力作用对Cu-W两相材料熔池溅射及侵蚀的影响。电弧光斑转移后，对比了不同Cu粒径大小的Cu(X)W合金的电弧侵蚀、熔池溅射过程。结果表明：在电弧侵蚀过程中，W相分布对熔池扩散有明显的抑制作用，Cu(2.0)W合金烧蚀过程中，溅射角度及速度可达52.5°和120 m/s,烧蚀形貌更为均匀，最大程度避免局部区域严重侵蚀而导致材料失效现象。在两Cu相光斑相距较近时，邻近侧熔融Cu液滴溅射角度会相应增大10°左右。与电弧烧蚀后合金的微观形貌进行比对，验证了模型的可靠性。

关键词(KeyWords)： 电弧侵蚀;Cu(X)W合金;熔池;蒸发;熔池演变

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52175314);; 河南省自然科学基金(202300410122);; 中原人才计划-中原青年拔尖人才([2023]11);; 中国工程科技发展战略河南省研究院战略咨询研究项目(2021HENZDA02);; 河南省杰出人才创新基金(182101510003)

作者(Author): 贾明灿,皇涛,宋克兴,国秀花,冯江,宋海通

DOI: 10.13289/j.issn.1009-6264.2023-0424

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