摘要
系统研究了 Ti4 6 Al8.5 Nb0 .1C0 .2 B合金简称 0 .1C0 .2 B合金在 76 0℃～ 815℃ ,14 0 MPa～ 4 0 0 MPa的蠕变条件下的蠕变性能和蠕变机制。研究表明 ,在同等蠕变条件下同其它钛铝合金相比 ,0 .1C0 .2 B合金最小蠕变速率降低 2倍～ 10倍 ,蠕变应力提高 5 0 MPa～ 15 0 MPa。
The creep properties and creep mechanism of Ti-46Al-8. 5Nb-0.1C-0. 2B alloy e. g. 0. 1C0. 2B alloy have been studied systematically under an initial stress of 140 MPasimilar to400 MPa at 760degreesCsimilar to815degreesC. The results show that the minimum creep rate of the alloy decreases by two to ten times, creep stress increases by 50 MPasimilar to150 MPa, such an excellent creep resistance results from solution strengthening of high niobium alloying and precipitate strengthening of carbides.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2002年第1期31-36,共6页
Rare Metal Materials and Engineering
基金
国家自然科学基金重点资助项目 (5 895 15 1)
关键词
高铌钛铝合金
蠕变抗力
固溶强化
沉淀强化
high niobium containing TiAl alloy
creep resistance
solution strengthening
precipitate strengthening
