<strong>Hf</strong>和<strong>Ta</strong>对镍基粉末高温合金蠕变断裂特征和性能的影响

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11 750 ℃、580MPa蠕变断裂后晶界上析出的M₂₃C₆相

Fig.11 M₂₃C₆ phase on grain boundaries after 750 ^oC, 580 MPa creep rupture (Yellow lines indicate M₂₃C₆ phase)
(a) 0Hf + 0Ta alloy
(b) 0.5Hf + 2.4Ta alloy
(c) BF TEM image of M₂₃C₆ phase in 0.5Hf + 2.4Ta alloy
(d) DF TEM image, SAED pattern, and EDS corresponding to Fig.11c