交叉包套轧制Ti-44Al-5Nb-1Mo-2V-0.2B合金的微观组织演化及力学性能

王秀琦, 李天瑞, 刘国怀, 郭瑞琪, 王昭东

Microstructure Evolution and Mechanical Properties of Ti-44Al-5Nb-1Mo-2V-0.2B Alloys in the Cross Hot-Pack Rolling Process

WANG Xiuqi, LI Tianrui, LIU Guohuai, GUO Ruiqi, WANG Zhaodong

图6 单向和交叉包套轧制TNM-VB合金的热变形组织

Fig.6 Hot deformation microstructures of TNM-VB alloy in the UHPR (a-c) and CHPR (d-f) processes (a) elongated lamellae and B2 phases (b) ω precipitated from B2 sub-structure (c) dislocations and twinning in γ grains (Inset shows the selected area electron diffraction (SAED) pattern of γ twinning pointed by green circle) (d) bended and kinked lamellae (e) γ substructure (f) DRXed γ grain and secondary twinning (Red and blue lines show primary and secondary twinning boundaries, respectively)