摘要
研究了高温变形参数对Ti-24Al-15Nb-1.5Mo合金显微组织的影响。实验选取的变形温度为980℃,应变速率为10-3～10-1s-1,变形程度为30%～50%。结果表明:在变形过程中,应变速率对α2相体积分数影响不大,但对α2相晶粒的形态和尺寸有一定影响,较高的应变速率有利于细化晶粒;随着变形程度的提高,α2相晶粒的细化程度增加,晶粒粒径更加细小。
The effects of hot deformation parameters on the microstructure of Ti3Al based alloy were investigated,under deformation temperature 980℃,the strain rate in the range of 10-3 to 10-1 s-1 and the deformation degree increasing from 30% to 50%.The test results show that the strain rate has little effect on the volume fraction of α2 phase,but it has a certain effect on the shape and the size of the α2 phase grain.Higher strain rate is advantage for the grain refinement.The grain is refined with increasing deformation degree.
出处
《热加工工艺》
CSCD
北大核心
2012年第16期32-34,共3页
Hot Working Technology
基金
陕西省教育厅专项基金(2010JK647)
西安建筑科技大学人才基金(RC0931)
西安建筑科技大学青年科技基金(QN1013)
