Re和Ta对抗热腐蚀单晶高温合金900 ℃长期时效组织稳定性的影响

黄太文,卢晶,许瑶,王栋,张健,张家晨,张军,刘林

Effects of Rhenium and Tantalum on Microstructural Stability of Hot-Corrosion Resistant Single Crystal Superalloys Aged at 900 ℃

Taiwen HUANG,Jing LU,Yao XU,Dong WANG,Jian ZHANG,Jiachen ZHANG,Jun ZHANG,Lin LIU

表4 指前因子(D0m,Ni)及溶质原子与Ni之间的扩散激活能(Qm,Ni) [23]

Table 4 Pre-exponential factor (D0m.Ni) and diffusion activation energy (Qm.Ni) for solute atoms in Ni[23]

Element D0m.Ni / (m2·s-1) Qm,Ni / (kJ·mol-1) Cr 3×10-6 170.7 Co 7.5×10-5 285.1 Mo 1.15×10-4 281.3 Re 8.2×10-7 255.0 W 8.0×10-6 264.0 Ni 1.9×10-4 284.0