电子束精炼Ni-Cr-Co三元合金过程中的元素挥发行为研究  

Study on Element Volatilization during Electron Beam Smelting of Ni-Cr-Co Ternary Alloy

作　　者：李赫 石爽[1] 庄辛鹏 赵龙海 谭毅[1] LI He;SHI Shuang;ZHUANG Xin-peng;ZHAO Long-hai;TAN Yi(Laboratory for New Energy Material Energetic Beam Metallurgical Equipment Engineering of Liaoning Province,School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China)

机构地区：[1]大连理工大学材料科学与工程学院辽宁省新能源材料载能束冶金装备工程实验室

出　　处：《有色金属（冶炼部分）》2019年第10期16-21,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(91860123);中央高校基本科研业务费项目(DUT18ZD206);中国博士后科学基金特别资助项目(2019T120575)

摘　　要：对Ni-Cr-Co三元合金进行了电子束精炼,结合元素挥发热力学和动力学理论阐明了精炼过程中合金元素的挥发规律。结果表明:电子束精炼后,Ni元素的质量分数增加,Cr元素的质量分数减小,Co元素的质量分数变化不大;在15 kW的电子束精炼功率下,Co元素的挥发速率为1.37 g/(m^ 2·s),精炼过程中熔体表面平均温度为1980.4 K。基于上述研究,对FGH4096母合金电子束精炼过程中Ni、Cr、Co三种元素的质量分数变化进行了预测,理论计算值与试验测量值符合较好。Ni-Cr-Co ternary alloy was refined by electron beam smelting.Volatilization of alloying elements during smelting was clarified with combination of thermodynamics and kinetics of elemental volatilization.The results show that Ni mass fraction rises,Cr mass fraction drops,and Co mass fraction doesn’t change much after electron beam smelting.Volatilization rate of Co is 1.37 g/(m 2·s)and average temperature of melt surface during smelting is 1980.4 K under electron beam smelting power of 15 kW.Based on the above research,mass fractions of Ni,Cr and Co in electron beam smelting FGH4096 master alloy are predicted.The theoretical calculations are in good agreement with the experimental measurements.

关 键 词：电子束精炼 Ni-Cr-Co三元合金 合金元素挥发 熔体表面温度 

分 类 号：TF134[冶金工程—冶金物理化学] TG146.1[一般工业技术—材料科学与工程]