TC4钛合金电子束冷床熔炼成分均匀性研究

Research on Composition Uniformity of TC4 Alloys during Electron Beam Cold Hearth Melting

摘要: 研究采用不同的熔炼速度，电子束冷床熔炼TC4钛合金铸锭成分的均匀性。结果表明：电子束冷床熔炼出的铸锭成分符合国家标准，熔炼效果良好。在轴向上，从铸锭的顶部至底部，Al元素的含量呈下降的趋势，并且随着熔炼速度的降低，其下降的趋势增加；V元素分布非常均匀，没有偏析现象出现。在径向上，铸锭的各合金元素分布均匀。

Abstract: The composition uniformity of TC4 alloys ingot during electron beam cold hearth melting which used different melting speeds was studied. The results show that the ingot produced by electron beam cold hearth melting accord with the national standard, with a good melting effect. In the axial direction of the ingot from the top to the bottom, the Al content presents a decrease trend, and as the melting rate decreases, the decrease trend is more evident. The V element distribution is uniform, and no segregation phenomenon appears. In the radial direction of the ingot, the alloy elements distribution is very uniform.