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
图3 不同峰值应力下Ti6242合金常规疲劳和保载疲劳断口形貌的OM像
Fig.3 OM images illustrating NF (a1-a3) and DF (b, b1-b3) fracture surfaces of Ti6242 alloy at peak stresses of 0.85σ0.2 (b), 0.94σ0.2 (a1, b1), 0.98σ0.2 (a2, b2), and 1.05σ0.2 (a3, b3) with the faceted initiation sites circumscribed by elliptical circles