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2 热处理后不同Hf和Ta含量合金的显微组织及元素分布

Fig.2 Microstructures and element distributions of 0Hf + 0Ta (a1-a3), 0.5Hf + 0Ta (b1-b3), 0Hf + 2.4Ta (c1-c3), and 0.5Hf + 2.4Ta (d1-d3) alloys (a1-d1) distributions of MC carbides (PPB—prior particle boundary) (a2-d2) morphologies of γ′ phase (a3-d3) element distribution mappings of γ and γ′ phases (HAADF—high angle annular dark field)