摘要
利用透射、扫描电镜及Ｘ－射线衍射分析较系统地研究了Ｔｉ－１５Ｍｏ－２．７Ｎｂ－３Ａｌ－０．２Ｓｉ钛合金中亚稳β相在时效过程中的分解特性，并建立了相应的时效动力学转变图。研究结果表明，在５００℃以上时效，β相直接析出次生α相，该温度以下，先析出ω过渡相，再逐步过渡到平衡α相。最后，对该合金的时效硬化效应及硅化物沉淀特性也进行了讨论。
The
precipitation behaviors of metastable β phase during aging in Ti 15Mo 2 7Nb 3Al 0 2Si
alloy were systematically studied by using TEM, SEM and X Ray diffraction analysis The
kinetic diagram of aging transformation was established also Research results show that α
phase is directly precipitated from β matrix during aging above 500℃ and ω phase is prior
formed below this aging temperature ω phase gradually transits to α equilibrium phase in
subsequent aging Finally, the aging hardening effect and formation of silicide in this alloy are
discussed
出处
《材料工程》
EI
CAS
CSCD
北大核心
1999年第3期19-23,共5页
Journal of Materials Engineering
关键词
钛合金
相变
时效硬化效应
硅
化学成分
Ti 15Mo 2 7Nb 3Al 0 2Si titanium alloy phase transformation
