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7 在700 ℃不同蠕变应力下粗晶试样晶粒内微孪晶的TEM暗场像、选区电子衍射(SAED)花样和孪晶密度分析 (<011>带轴)

Fig.7 Dark field TEM images (a-c) and density analyses (d-f) of microtwins in coarse grain sample at 700 oC under creep stresses of 780 MPa (a, d), 810 MPa (b, e), and 900 MPa (c, f) (<011> zone axis. Insets in Figs.7a-c show the corresponding SAED patterns. Line 1-line 3 show analyzing directions for analyzing microtwin density)