航空航天钛合金用中间合金——钒铝65合金

The Master Alloy of VAl65:35 Used for Aerospace

中间合金是生产航空航天用钛合金和高温合金的关键原材料之一,然而中间合金的生产在国内航空航天材料界却没有引起足够的重视。重点介绍了目前在国际航空航天工业中应用最广泛的钒铝65中间合金,包括其制备工艺和质量控制等。与传统的钒铝55合金相比,钒铝65合金具有渣-金属分离效果好、有害杂质含量低、可见氧化膜与氮化膜少及成分均匀性好等优点,将是我国钒铝中间合金的发展方向。

Master alloys are one of the key materials to produce high quality aerospace titanium alloys and superalloys, but they have not drawn enough attention in domestic aerospace industry. So in this paper, master alloy of VA165：35 is introduced, including its fabrication technology, quality control and so on. Compared with the traditional master alloy of VA155：45, VA165：35 has many strong points, such as excellent separating effect for slag and alloy, low detrimental impurity content, less visible oxide filrn/nitride film, well composition uniformity and ect. So VA165：35 may become the development direction of VA1 master alloy in China.