一种镍基单晶高温合金的蠕变组织损伤对再蠕变行为的影响

张敏, 张思倩, 王栋, 陈立佳

Creep Microstructure Damage and Influence on Re-creep Behavior for a Nickel-based Single Crystal Superalloy

ZHANG Min, ZHANG Siqian, WANG Dong, CHEN Lijia

表1 DD413单晶高温合金不同应变量处显微组织参数的定量表征

Table 1 Quantitative statistics of microstructure parameters of the DD413 single-crystal superalloy after various strain conditions

Specimen Vf / % Ω / % D / μm W / μm SHT 52.2±1.2 0 0.291±0.063 0.099±0.031 980℃/200 MPa/0.2% 46.9±1.4 0.240±0.083 0.364±0.103 0.168±0.004 980℃/200 MPa/0.5% 44.2±0.2 0.298±0.084 0.346±0.007 0.188±0.051 980℃/200 MPa/1.0% 41.5±1.2 0.561±0.059 0.337±0.076 0.265±0.072 870℃/430 MPa/0.2% 45.8±1.6 0 0.328±0.086 0.112±0.046 870℃/430 MPa/0.5% 46.6±0.5 0.005±0.009 0.327±0.082 0.128±0.039 870℃/430 MPa/1.0% 44.9±0.6 0.112±0.154 0.314±0.086 0.152±0.049