多组元钛合金电子束冷床炉熔炼挥发规律研究

Effect of Micro-arc Oxidation on Fretting Wear Behavior of TC4 Titanium Alloy

摘要:

利用电子束冷床炉(EB炉)一次熔炼制备TC4、Ti6242、TA15钛合金铸锭,采用Langmuir定律对熔炼过程中Al、Sn、Zr、Mo等元素的挥发规律做了简要的数值分析,并与实际挥发规律进行了对比分析。结果表明:EB炉熔炼TC4、Ti6242、TA15钛合金过程中,Al元素在3种合金中的挥发率有所不同,挥发率由大到小顺序为TC4> Ti6242>TA15; Al元素是TC4钛合金中主要的挥发元素; Ti6242钛合金中,Al、Sn元素之间存在联合挥发的问题; TA15钛合金中,Al、Zr元素之间亦存在联合挥发的问题,Al元素带动了Zr元素(难挥发元素)的挥发。

Abstract:

TC4,Ti6242 and TA15 titanium alloy ingot were prepared by one-time smelting using an electron beam cold-bed melting furnace( EB furnace). A brief numerical analysis of the volatilization law of Al,Sn,Zr and Mo elements was studied by Langmuir's law,which was compared with the actual volatility law. The results show that in the EB melting process of TC4,Ti6242,TA15 titanium alloys,the volatilization ratio of Al in the three alloys is different,and the order of volatilization ratio is TC4 > Ti6242 > TA15. Al is the main volatile element of TC4 titanium alloy.The problem of joint volatilization exists between Al and Sn elements in Ti6242 titanium alloy. In TA15 titanium alloy,there is also a problem of joint volatilization between Al and Zr elements,and the volatilization of Al element drives the volatilization of Zr element( hard-to-volatile element).