V和B元素对Ti-44Al-5Nb-1Mo合金显微组织及热变形机制的影响

李天瑞, 许瑜倩, 吴文平, 甘文萱, 杨永, 刘国怀, 王昭东

Effects of V and B on the Microstructure Evolution and Deformation Mechanisms of Ti-44Al-5Nb-1Mo Alloys

LI Tianrui, XU Yuqian, WU Wenping, GAN Wenxuan, YANG Yong, LIU Guohuai, WANG Zhaodong

图9 Ti-44Al-5Nb-1Mo-2V-0.2B合金显微组织的TEM分析

Fig.9 TEM analyses of the microstructure of Ti-44Al-5Nb-1Mo-2V-0.2B alloy (a) 1050oC, 1 s-1 (b) 1050oC, 0.01 s-1 (c) 1200oC, 1 s-1, shows the twin boundaries paralleling to the lamellae (Insets show the SAED pattern and corresponding dark field image. T—twinning, γT—twinning of γ phase) (d) 1200oC, 1 s-1, shows the secondary twins (Insets show the high magnified image of the square area and SAED pattern)