TC4钛合金跨相区连续热压缩 α 相组织演变规律及织构形成机理

赵焯雅, 孟令健, 林鹏, 曹晓卿

Microstructure Evolution and Texture Formation Mechanism of α Phase During Continuous Through-Transus Thermal Compression of TC4 Titanium Alloy

ZHAO Zhuoya, MENG Lingjian, LIN Peng, CAO Xiaoqing

表1 TC4钛合金在不同相区内的变形参数

Table 1 Deformation parameters of TC4 titanium alloys in different phase fields

Sample No. Process Deformation parameter 1 α + β phase field compression 920 oC, 30%, 0.01 s-1 2 920 oC, 30%, 0.05 s-1 3 920 oC, 60%, 0.01 s-1 4 920 oC, 60%, 0.05 s-1 5 β phase field holding or compression 1020 oC, 5 min (undeformed) 6 1020 oC, 30%, 0.01 s-1 7 1020 oC, 60%, 0.01 s-1 8 1020 oC, 30%, 0.05 s-1 9 Continuous through-transus compression 1020 oC, 30%, 0.01 s-1 + 920 oC, 30%, 0.01 s-1 10 1020 oC, 30%, 0.05 s-1 + 920 oC, 30%, 0.05 s-1 11 1020 oC, 30%, 0.01 s-1 + 920 oC, 60%, 0.01 s-1 12 1020 oC, 30%, 0.05 s-1 + 920 oC, 60%, 0.05 s-1 13 1020 oC, 5 min (undeformed) + 920 oC, 60%, 0.01 s-1