Microcrack formation under normal and dwell fatigue of IMI 834

〈112̄0〉-orientation-dependent crack initiation in a titanium alloy under dwell fatigue

“…5,9,16,17 Moreover, the angle between the c -axis of soft grains and the applied stress strongly influences the crack nucleation of adjacent hard grains under dwell fatigue. 18–21 Here, the soft grain is favorably oriented for slips of prismatic 〈 a 〉 type dislocations, 18,22 while the hard grain has its c -axis nearly parallel to the applied stress and is poorly oriented for slips. 18,22,23 In recent years, some studies have suggested that the grain conducive to basal slips is also considered soft.…”

“…18,22,23 In recent years, some studies have suggested that the grain conducive to basal slips is also considered soft. 19,24 So far, the definition of soft and hard grains is still unclear.…”