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1 粗晶和细晶试样中析出相的尺寸和体积分数

Table 1 Sizes and volume fractions of precipitates in the coarse grain and fine grain samples

Heat treatment Sample Precipitate Average size / nm Volume fraction / % HT1 Coarse grain Primary γ' 597 0.6 Secondary γ' 241 51.2 Tertiary γ' 48 3.6 η 4 0.3 HT2 Fine grain Primary γ' 1107 22.0 Secondary γ' 146 28.0 Tertiary γ' 53 2.6 η 7 2.2