Role of local recrystallization behavior on fatigue performance of SLMed 304L austenitic stainless steels

The fatigue performance has always been the key problem hindering the development of disruptive additive manufacturing (AM) technology. We recently found the stored energy induced by SLM process and cyclic strain during fatigue testing can trigger grain boundary migration and local recrystallization behavior. In addition, the junctions between the recrystallized grain tribes and the original coarse grains can lead to the plastic strain...