纳米孪晶强化304奥氏体不锈钢的应变控制疲劳行为

潘庆松, 崔方, 陶乃镕, 卢磊

Strain-Controlled Fatigue Behavior of Nanotwin- Strengthened 304 Austenitic Stainless Steel

PAN Qingsong, CUI Fang, TAO Nairong, LU Lei

图3 纳米孪晶强化304 SS表面疲劳形貌特征

Fig.3 SEM image of surface fatigue features in NT strengthened 304 SS fatigued at Δε pl / 2 of 0.05% (a, b) and 0.25% (c, d) (LA denotes the cyclic loading axis. The white arrows in Figs.3a and d denote the slip bands and crack in coare grains, respectively. The black arrows in Figs.3b and c denote the zigzag slip bands across twin boundaries while the white ones in Fig.3b indicate the slip bands parallel to twin boundaries)