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Metals, Volume 9, Issue 11 (November 2019)
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Cover Story (view full-size image) A process-structure-properties-performance modeling framework is presented for selective laser [...] Read more. A process-structure-properties-performance modeling framework is presented for selective laser melting (SLM). Part scale temperature evolution is represented with a computationally efficient large-scale heat transfer model. Powder bed scale melt pool behavior is described with a diffuse-interface multiphase computational fluid dynamics model. We use phase field method to simulate rapid solidification microstructures, and show how in Ti-6-4, inoculation can lead to equiaxed structures. Simulated microstructures are enriched with synthetic lath martensite substructures and different defects, and their cyclic loading (fatigue) is investigated with crystal plasticity. The simulated fatigue life is consistent with literature, and demonstrated the potential of ICME to predict the role of defects in dominating the performance of SLM structures. View this paper.