Ta对一种抗热腐蚀镍基单晶高温合金长时热暴露组织和蠕变性能的影响

刘静, 张思倩, 王栋, 王莉, 陈立佳

Effect of Ta on the Microstructure and Creep Properties of a Hot-Corrosion Resistant Ni-Based Single-Crystal Superalloy After Long-Term Exposure

LIU Jing, ZHANG Siqian, WANG Dong, WANG Li, CHEN Lijia

表1 实验用抗热腐蚀镍基单晶高温合金的成分 (mass fraction / %)

Table 1 Compositions of hot-corrosion resistant nickel-based single-crystal superalloys for experiment

Alloy Al + Ti Cr Co Mo W C Re Ta Ni 2Ta 7.6 9.8 8.3 0.47 4.5 0.039 1.93 1.9 Bal. 5Ta 7.5 9.7 8.2 0.47 4.5 0.038 1.92 5.2 Bal. 8Ta 7.4 9.5 8.2 0.47 4.5 0.038 1.93 8.1 Bal.