摘要
研究了间隙元素C对600℃高温钛合金(Ti60)热处理温度窗口的影响。结果表明:微量C元素对Ti60合金的a+β→β相变过程有明显影响,C元素不仅提高了合金的相转变温度(T_β),而且显著减缓了初生a相含量的变化。微量的C元素(质量分数<0.1％)可以使a体积分数的变化速率从(1.5％～2％)·℃^(-1)(Ti60)减缓到0.5％·℃^(-1)(Ti60-C)左右。C元素的这种特性改善了Ti60钛合金在a+β上部区的热处理温度窗口,可以确保该合金在较宽温度范围内进行固溶处理时初生a相的体积分数保持相对稳定,同时也确保了合金具有稳定的高温蠕变抗力。
The effect of element C on heat-treatment processing window of 600℃ high temperature titanium alloy (Ti60) was studied in this paper. The results indicate that minor element C can affect α+β→β polymorphic transformation process of Ti60 effectively. Tiny element C can increase the β transus temperature ( Tβ ), and then slow the transformation rate of α volume fraction from (1.5% -2%) · ℃-1 to about 0. 5% · ℃-1.This feature of C can lead to a relatively stable primal α volume fraction within a wider temperature window, consequently, which make the alloy's creep properties stable.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2003年第7期20-22,共3页
Journal of Materials Engineering
关键词
高温钛合金
热处理温度窗口
蠕变性能
C元素
high temperature titanium alloy
heat treatment temperature window
creep property
element C
