电子束冷床炉熔炼TA31钛合金过程中元素的挥发损失  

Element Volatilization Loss of TA31 Titanium Alloy during Electron Beam Cold Hearth Melting

作　　者：张浩泽 王隽生 黄海广[1,2] 肖永江 钟海 Zhong Haoze;Wang Junsheng;Huang Haiguang;Xiao Yongjiang;Zhong Hai(School of Materials Science and Engineering,Kunming University of Science and Technology;Yunnan Titanium Industry Co.,Ltd.)

机构地区：[1]昆明理工大学材料科学与工程学院,昆明651209 [2]云南钛业股份有限公司

出　　处：《特种铸造及有色合金》2022年第3期314-318,共5页Special Casting & Nonferrous Alloys

基　　金：云南省重大科技专项基金资助项目(202002AB080001-3)。

摘　　要：采用电子束冷床炉熔炼TA31合金圆锭,对其化学成分和熔炼工艺进行对比分析。发现熔炼速度显著影响铸锭轴向成分的稳定性,铸锭轴向Al含量随熔炼速度的增加而升高,反之亦然;减小熔炼速度波动可提高铸锭中Al含量的稳定性;Nb、Zr、Mo元素在轴向和径向分布均匀。试验检测结果和动力学分析均表明,Nb、Zr、Mo元素挥发量可忽略,由于Ti和Al元素的挥发,导致其含量略有升高。Round ingot of TA31 alloy was melted by electron beam cold hearth furnace,and the chemical composition as well as the melting process were analyzed comparatively.The results indicate that the stability of axial composition in the ingot is significantly affected by melting speed.The axial Al content in the ingot is increased with the increase of melting speed,and vice versa.The reduction of melting speed fluctuation can improve the stability of Al content in ingot,and the distribution of Nb,Zr and Mo is uniform along the axial and radial direction.The test results and kinetic analysis reveal that the volatilization amount of Nb,Zr and Mo can be negligible.The volatilization of Ti and Al results in a slight increase of percentage content.

关 键 词：TA31钛合金 电子束冷床熔炼(EBCHM) 元素挥发 成分均匀性 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TF134[金属学及工艺—金属材料]