高Fe、Cr含量多相Ni3Al基高温合金组织与性能研究进展
吴静,刘永长(
),李冲,伍宇婷,夏兴川,李会军
),李冲,伍宇婷,夏兴川,李会军
Recent Progress of Microstructure Evolution and Performance of Multiphase Ni3Al-Based Intermetallic Alloy with High Fe and Cr Contents
WU Jing,LIU Yongchang(),LI Chong,WU Yuting,XIA Xingchuan,LI Huijun
),LI Chong,WU Yuting,XIA Xingchuan,LI Huijun
图12. 1200 ℃、10 h退火试样在800 ℃、1000 h长期时效，并经800 ℃、220 MPa蠕变断裂后近断口组织中裂纹的萌生与扩展
Fig.12. Longitudinal microstructures near the fracture surface of 1200 ℃, 10 h annealing followed by 800 ℃, 1000 h aged sample after crept up to fracture at 800 ℃, 220 MPa, showing that the initiation and propagation of creep cracks at the grain boundaries (GBs) (a) and at the interface of γ'-envelope/interdendritic β, in the interior of β, and around the carbides in widened γ'-envelope (b)
