Defect-controlled fatigue mechanisms of LPBF 316L stainless steel: a mini-review
Feng Li
Laser powder bed fusion (LPBF) enables rapid fabrication of 316L stainless steel (SS 316L) with complex structures, but its rapid solidification and layer-by-layer deposition inevitably induce defects, such as pores and lack of fusion (LOF), severely restricting fatigue performance. This mechanics-focused mini-review summarizes recent research on the fatigue performance of SS 316L, focusing on the interaction mechanism between defect characteristics and the principal normal stress. The effects o