峰值应力对Ti6242压气机盘锻件室温保载效应的影响
徐小严, 方超, 邱建科, 张蒙蒙, 史栋刚, 马英杰, 雷家峰, 杨锐

Influence of Peak Stress on Room Temperature Dwell Effect in Ti6242 Compressor Disc Forging
XU Xiaoyan, FANG Chao, QIU Jianke, ZHANG Mengmeng, SHI Donggang, MA Yingjie, LEI Jiafeng, YANG Rui
表1 基于三维XCT数据统计的常规疲劳和保载疲劳断口中二次裂纹的数目及尺寸
Table 1 Statistics on the number and size of internal secondary cracks in NF and DF fractures from XCT datasets

Fatigue

waveform

Peak stress

MPa

Number of

secondary crack

Maximum individual size

μm

Average individual size

μm

NF0.94σ0.242114862
1.05σ0.210138692
DF0.85σ0.2256641
0.94σ0.23626694
0.98σ0.228264767
1.05σ0.2372043955