(洛阳船舶材料研究所，洛阳 471039)
摘 要: 采用透射电镜和金相显微镜等分析方法，研究Ti10V2Fe3Al合金ω相的形成规律和ω相对合金性能的影响。结果表明：当采用双重退火制度时，第一退火温度高于相变点或第二退火温度低于再结晶温度时，有大量ω相析出，此时合金的强度较高，但塑性非常差，无法满足使用要求；同时，在采用单重热处理制度的条件下，当处理温度高于相变点时，随着处理温度的升高，ω相析出迹象越明显，合金的塑性降低。
关键字: Ti10V2Fe3Al钛合金；ω相；热处理
（Luoyang Ship Material Research Institute, Luoyang 471003, China）
Abstract:The effect of heat treatments on the precipitation of ω phase are studied using TEM and optical microscope. The effects of ω phase on the tensile properties of the alloy also were conducted. The results show that by solution treatment just above the β-transus and air cooling, a small amount of athermal ω phases precipitate. And aging treatment above recrystallization temperature performed subsequent to the solution will largely increase the content and somewhat the size of ω phase, which results in the strength increasing extremely and very low plastic. On the other hand, if the solution treatment in α+β phase top field and aging treatment below recrystallization temperature, finely dispersed isothermal ω phase could precipitate considerably in β phase zone, which also leads to high strength and nearly brittle breaking.
Key words: Ti10V2Fe3Al alloy; ω phase; heat treatment
