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
表3 在700 ℃不同应力条件下蠕变断口的裂纹源区和扩展区的面积占比
Table 3 Area ratios of the crack source region and expansion region of the creep fracture under different stress conditions at 700 oC

Stress

MPa

Coarse grain sampleFine grain sample
Source region / %Expansion region / %Source region / %Expansion region / %
78023.047.822.248.6
81021.945.427.639.6
90012.953.427.338.4