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- W4223923672 abstract "Selective laser melting is a typical powder-bed additive manufacturing technology, for which it is difficult and expensive to observe and measure the molten pool due to its short lifetime and tiny size. This paper introduced a two-stage mesoscopic layer-by-layer simulation framework for the numerical study of the SLM process, where the powder laying and laser scanning are included and conducted alternatively. For the simulation of powder laying, the dynamic behaviors of the particles as well as the particle-particle and particle-scraper interactions are included. For the simulation of laser scanning, a coupled multi-phase and multi-physics system was considered, where the effects of surface tension, Marangoni effect, and vapor recoil are considered, and the behaviors of heat transfer, fluid flow, and melting/solidification are simulated. This simulation framework was then used to simulate the Ti-6Al-4V SLM process. The evolutions of the molten pool and track were presented, and the characteristics of the molten pool, keyhole, and track were analyzed and discussed, specifically, the effects of the laser power and scanning speed on the three-dimensional morphology and size of the molten pool were numerically studied, and their dependencies were discussed and found." @default.
- W4223923672 created "2022-04-19" @default.
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- W4223923672 date "2022-04-13" @default.
- W4223923672 modified "2023-10-14" @default.
- W4223923672 title "A Numerical Study on the Mesoscopic Characteristics of Ti-6Al-4V by Selective Laser Melting" @default.
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- W4223923672 doi "https://doi.org/10.3390/ma15082850" @default.
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