超细晶纯钛疲劳裂纹的扩展行为
刘晓燕(), 柳奎君, 杨西荣, 王敬忠, 罗雷
Fatigue Crack Propagation Behavior of Ultrafine Grained Pure Titanium
LIU Xiaoyan(), LIU Kuijun, YANG Xirong, WANG Jingzhong, LUO Lei

图5. 不同状态超细晶纯钛的疲劳断口形貌

Fig.5. Fracture morphology of UFG pure titanium (a, d, g, j) near threshold region; (b, e, h, k) stable growth region; (c, f, i, l) at ending stage. Note that (a~c) ECAP, (d~f) ECAP+RS, (g~i) 300℃, (j~l) 400℃