Hf和Ta对镍基粉末高温合金蠕变断裂特征和性能的影响

张浩鹏, 白佳铭, 李新宇, 李晓鲲, 贾建, 刘建涛, 张义文

Effect of Hf and Ta on Creep Rupture Characteristics and Properties of Powder Metallurgy Ni-Based Superalloys

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

图1 等离子旋转电极法(PREP)制备粉末形貌，热等静压(HIP)和热处理(HT)锭坯尺寸，及蠕变试样尺寸

Fig.1 Morphology of powders obtained by plasma rotating electrode process (PREP) (Inset shows one typical PREP powder) (a), the size of ingot after hot isostatic pressing (HIP) and heat treatment (HT) (unit: mm) (b), and the size of creep specimen (unit: mm) (c)