Effect of Selective Laser Melting Parameters on the Melt Pool Formed by Single Tracks of the Heat-Resistant Inconel 718 Nickel Alloy

Adjamsky, Sergey; Tkachev, Yu. V.; Kononenko, G. A.

doi:10.1007/s11106-021-00183-8

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…Yang L X et al [14] investigated the corresponding relationship between molten pool morphology, scanning speed, and surface tension by establishing equilibrium equations for surface tension, gravity, and external forces. Studies conducted by Adjamsky et al [15] on Inconel 718 nickel alloy and Raut et al [16] on IN625 investigated the relationship between process parameters and molten pool morphology and macro-mechanical properties. The above research demonstrates that the relationship between process parameters and molten pool morphology can be elucidated through experimentation and numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

Achievement of a Parameter Window for the Selective Laser Melting Formation of a GH3625 Alloy

Quan,

Deng,

Zhao

et al. 2024

Materials

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In the selective laser melting (SLM) process, adjusting process parameters contributes to achieving the desired molten pool morphology, thereby enhancing the mechanical properties and dimensional accuracy of manufactured components. The parameter window characterizing the relationship between molten pool morphology and process parameters serves as an effective tool to improve SLM’s forming quality. This work established a mesoscale model of the SLM process for a GH3625 alloy based on the discrete element method (DEM) and computational fluid dynamics (CFD) to simulate the forming process of a single molten track. Subsequently, the formation mechanism and evolution process of the molten pool were revealed. The effects of laser power and scanning speed on the molten pool size and molten track morphology were analyzed. Finally, a parameter window was established from the simulation results. The results indicated that reducing the scanning speed and increasing the laser power would lead to an increase in molten pool depth and width, resulting in the formation of an uneven width in the molten track. Moreover, accelerating the scanning speed and decreasing the laser power cause a reduction in molten pool depth and width, causing narrow and discontinuous molten tracks. The accuracy of the simulation was validated by comparing experimental and simulated molten pool sizes.

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Section: Introductionmentioning

confidence: 99%