一、前言 BT9是苏联牌号的高温钛合金,用在喷气涡轮发动机压气机部分,使用温度在500℃以下。本文从Zr,Sn对蠕变性能影响来估价以Zr代Sn的作用。另外,根据文献报导Si的加入可提高抗蠕变性能,在BT9合金中含Si量多少较适宜,也是本文研究的目的。二、试样来源及性能试样取自φ160毫米的二次真空自耗冶 First, the foreword BT9 is the Soviet Union grade high temperature titanium alloy used in jet turbine engine compressor part, the use of temperature below 500 ℃. This paper evaluates the effect of Zr on Sn from the influence of Zr and Sn on creep properties. In addition, according to the literature reported that the addition of Si can improve the creep resistance, the amount of Si in the BT9 alloy is more appropriate, but also the purpose of this study. Second, the sample source and performance samples taken from the φ160 mm secondary vacuum consumable rule