摘要
钛合金的冶金质量决定了材料的力学性能和服役的稳定性。然而在目前普遍采用真空自耗电弧炉熔炼的钛合金中仍存在微观及宏观偏析缺陷,严重危害产品的使用安全。在总结前人研究与实践的基础上,综述了真空自耗熔炼钛合金中偏析缺陷的类型、危害和控制手段。重点利用熔池流动理论分析了偏析形成的原因,讨论了数值模拟对偏析的控制作用,总结了原料品质、熔炼工艺和熔炼设备层面的控制方法,以期为优化钛合金生产工艺、提高真空自耗熔炼产品品质提供参考。
The metallurgical quality of titanium alloy determines mechanical properties and service stability of the material.However,there are still micro and macro segregation defects in titanium alloys melted by vacuum consumable arc furnace,which seriously endangers the safety of products.On the basis of summarizing previous researches and practice,the types,hazards and control methods of segregation defects in vacuum arc melting titanium alloy are reviewed.The reason of segregation formation is analyzed by molten pool flow theory,and the control effect of numerical simulation on segregation is discussed.The control methods of raw material quality,smelting process and smelting equipment are summarized in order to provide reference for optimizing the production process of titanium alloy and improving the quality of vacuum arc smelting products.
作者
李明宇
杨树峰
刘威
贾雷
赵朋
鄢宇灿
LI Mingyu;YANG Shufeng;LIU Wei;JIA Lei;ZHAO Peng;YAN Yucan(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;State Key Laboratory of Advanced Metallurgy,University of Science and Technology,Beijing 100083,China;Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing,Beijing 100083,China)
出处
《中国冶金》
CAS
CSCD
北大核心
2023年第9期1-10,18,共11页
China Metallurgy
基金
国家自然科学基金资助项目(52104318,52074030)。
关键词
真空自耗熔炼
钛合金
偏析
熔池流动
数值模拟
vacuum arc remelting
titanium alloy
segregation
molten pool flow
numerical simulation
