Ti-V-Cr阻燃钛合金的微观组织

来源期刊：中国有色金属学报1998年第3期

论文作者：赵永庆 赵香苗 朱康英

文章页码：463 - 466

关键词：阻燃钛合金； Ti-25V-15Cr； Ti-35V-15Cr； 阻燃性能； 微观组织

Key words：burn resistant titanium alloy； Ti-25V-15Cr ； Ti-35V-15Cr； burn resistant properties； microstructures

摘    要：采用金相、 X射线衍射和透射电镜研究了Ti-V-Cr阻燃钛合金的微观组织,利用金属液滴实验法测试了合金的阻燃性能。 结果表明：Ti-V-Cr系合金具有很好的阻燃性能。 该系合金为单一的等轴β组织， 不存在第二相析出物， 合金元素V含量升高以及Al的加入并不影响合金的微观组织特征； 经400 ℃, 100 h热暴露后，合金仍为单一的β组织， 表明Ti-V-Cr系合金的组织结构是稳定的。

Abstract: Titanium alloys may be ignited and burnt under some special conditions. In order to reduce burning rate and improve the safety of flight, burn resistant titanium alloys have been developed. The microstructures of Ti-V -Cr burn resistant titanium alloys were studied by means of OM, XRD and TEM. The burn resistant behavior was examined by using metal liquid drop method. The results indicate that Ti-V-Cr alloys have good burn resistant properties, and they are single equiaxed β structures without second phase precipitates. Increasing of V content and addition of Al do not influence their microstructures. The single β structures still remain even after exposure at 400 ℃ for 100 h, showing that the structures of Ti-V-Cr alloys are stable.