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5 计算得到的5种合金的有效扩散系数(Deff)和扩散激活能(Qeff)

Table 5 Calculated effective diffusivity (Deff) and diffusion activation energy (Qeff) of five alloys

Alloy Deff / (m2·s-1) Qeff / (kJ·mol-1) 2Ta2Re 9.98×10-6 368.63 5Ta0Re 1.15×10-5 369.83 5Ta2Re 8.67×10-6 378.76 8Ta0Re 9.29×10-6 385.05 8Ta2Re 7.66×10-6 387.89