HfTa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5 各蠕变条件下不同Hf和Ta含量合金最小蠕变速率的计算值
Table 5 Calculated values of minimum creep rate of the alloys under various creep conditions
Alloy

650 oC,

970 MPa

700 oC,

770 MPa

750 oC,

580 MPa

0Hf + 0Taa1a2a3
0.5Hf + 0Ta0.93a10.94a20.94a3
0Hf + 2.4Ta0.68a10.69a20.70a3
0.5Hf + 2.4Ta0.64a10.66a20.67a3