坩埚材质对K465合金真空感应熔炼过程痕量元素影响规律  

Influence Rule of Crucible Materials on Trace Elements in Vacuum Induction Melting of K465 Superalloy

作　　者：刘东方 姜华 丁琪 张华霞 刘茜珂 孟宇 LIU Dong-fang;JIANG Hua;DING Qi;ZHANG Hua-xia;LIU Xi-ke;MENG Yu(Center of Melting&Casting,AECC Beijing Institute of Aeronautical Materials,Beijing 100094,China;Aviation Military Representative Office of the Army Equipment Department Aviation Representative Office in Zhuzhou,Zhuzhou 412002,Hunan,China)

机构地区：[1]中国航发北京航空材料研究院熔铸中心,北京100094 [2]陆军装备部航空军事代表局驻株洲地区航空军事代表室,湖南株洲412002

出　　处：《铸造》2022年第12期1495-1498,共4页Foundry

摘　　要：为了掌握坩埚材质对高温合金真空感应熔炼过程痕量元素含量的影响规律,以K465镍基铸造合金为载体,通过对炉前样进行成分分析,对比研究了采用氧化铝和氧化镁坩埚进行真空感应熔炼高温合金过程中痕量元素含量的变化规律。结果表明:与氧化铝基坩埚相比,氧化镁基坩埚由于坩埚反应导致合金液中的[Mg]含量随时间增加,添加活性元素Al、Ti、Ce、Y后,[Mg]含量增加速率增大。与氧化镁基坩埚相比,氧化铝坩埚更稳定,因而稀土元素Ce+Y的收得率更高。坩埚材质对痕量元素Zn、Pb、S、As、Sn、Se含量的变化规律无明显影响。In order to acquire the influence of crucible materials on trace elements in vacuum induction melting(VIM)of superalloys,the content variations of the trace elements in the VIM of K465 nickel-based superalloy melted with alumina and magnesia crucible were studied,respectively by the ladle analysis.The results showed that compared with the alumina crucible,the[Mg]content in the alloy melt increased with time due to the crucible reactions,and it increased at a higher rate with the addition of active elements Al,Ti,Ce and Y.Compared with the magnesia crucible,the alumina crucible was more stable,so the yield of rare earth elements Ce+Y was higher.It is also found that the crucible materials have no obvious influence on the variation of the contents of trace elements Zn,Pb,S,As,Sn and Se.

关 键 词：高温合金 真空感应熔炼 坩埚反应 痕量元素 真空挥发 

分 类 号：TF133[冶金工程—冶金物理化学]