先进镍基粉末高温合金FGH4108在不同应力条件下的蠕变行为

李新宇, 白佳铭, 张浩鹏, 李晓鲲, 贾建, 刘常升, 刘建涛, 张义文

Creep Behavior of Advanced Powder Metallurgy Nickel-Based Superalloys FGH4108 Under Different Stress Conditions

LI Xinyu, BAI Jiaming, ZHANG Haopeng, LI Xiaokun, JIA Jian, LIU Changsheng, LIU Jiantao, ZHANG Yiwen

图9 粗晶和细晶试样宏观断口的OM像

Fig.9 OM images showing the macroscopic fracture morphologies of coarse grain (a-c) and fine grain (d-f) samples under creep stresses of 780 MPa (a, d), 810 MPa (b, e), and 900 MPa (c, f) at 700 oC (Positions 1, 2, and 3 indicate the source region, expansion region, and shear region of the rupture section, respectively)