Effect of molten pool boundaries on the mechanical properties of selective laser melting parts

By Shifeng Wen, Li Shuai, Qingsong Wei, C. Yan, Zhang Sheng, Yusheng Shi. 2014

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Differences in microstructure and properties between selective laser melting and traditional manufacturing for fabrication of metal parts: A review (2015, background): “In SLM, a laser beam irradiates metal powders [2], which then form a micro melt pool [3], leading to a high cooling rate (10(3) to 10(8) K/s) [4].”
Influence of energy density on metallurgy and properties in metal additive manufacturing (2017, background): “The occurrence of balling is governed by variousmetallurgical mechanisms including molten pool behaviour, Marangoni convection and wettability [86,103,135].”
Mechanical anisotropy of additively manufactured stainless steel 316L: An experimental and numerical study (2021, background): “RSs [23–27] and melt pool boundaries [28] may also”
Towards understanding grain nucleation under Additive Manufacturing solidification conditions (2020, background): “There are several examples available in the literature where unique microstructures are reported from AM processes [20-23].”
High cycle fatigue life prediction of laser additive manufactured stainless steel: A machine learning approach (2019, background): “6 [44, 45], as well as dislocation and second phase particles at the grain and sub-grain boundaries [46].”