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

表1 4种实验用镍基粉末高温合金的实测成分 (mass fraction / %)

Table 1 Actual compositions of four kinds of experimental powder metallurgy (PM) Ni-based superalloys

Alloy Cr Co W Mo Al Ti Nb C B Zr Hf Ta Ni 0Hf + 0Ta 15.7 12.9 4.0 4.1 2.2 3.9 0.8 0.05 0.01 0.04 0 0 Bal. 0.5Hf + 0Ta 15.6 12.9 4.0 4.1 2.2 3.9 0.9 0.05 0.01 0.04 0.52 0 Bal. 0Hf + 2.4Ta 15.6 13.2 4.0 4.0 2.3 3.9 0.8 0.06 0.01 0.04 0 2.41 Bal. 0.5Hf + 2.4Ta 15.7 13.2 4.0 4.0 2.4 3.9 0.8 0.06 0.01 0.04 0.52 2.40 Bal.