摘要
对多元Nb-Ti-Al合金热压缩后的屈服曲线和显微组织进行了研究。结果表明:合金在室温低应变速率条件下不存在屈服软化现象;在高温大变形速率条件下存在屈服软化现象,且随着试验温度的降低和应变速率的增大,软化程度增大。其中在950℃时发生的屈服软化主要是由组织中溶质的再分配引起;而1050℃和1150℃时的屈服软化主要是由动态再结晶引起。
The flow stress and microstrucmrc of multicomponent Nb-Ti-Al alloy after hot compression were studied. The results show that the flow curves don＇t exhibit flow softening at room temperature in low strain rates; but the flow softening exhibits at the high temperature in high strain rates. The degree of flow softening is large, particularly at higher strain rates and lower temperature. The redistribution of solute is the main factors contributing factor to the flow softening at 950℃, the dynamic recrystallization is the main factors contributing to the flow softening of 1050℃ and 1150℃.
出处
《热加工工艺》
CSCD
北大核心
2009年第8期43-45,共3页
Hot Working Technology
