TY - JOUR
T1 - Molten pool macroscopic thermodynamic analysis during selective laser melting of AlSi10Mg
T2 - Simulations and experiments
AU - Xu, Yuting
AU - Li, Yuze
AU - Wang, Lingjie
AU - Song, Yinghao
AU - Li, Kangan
AU - Xing, Hui
AU - Chen, Biao
AU - Wang, Jianyuan
N1 - Publisher Copyright:
© 2024 The Authors
PY - 2024/11/1
Y1 - 2024/11/1
N2 - In this study, the three-dimensional (3D) finite element model of COMSOL Multiphysics was used to simulate the thermodynamic behavior of the AlSi10Mg molten pool (MP) during selective laser melting (SLM), and the results were verified by multiple groups of single-track SLM experiments. The simulations take into account numerous thermophysical phenomena such as fluid flow, heat conduction, heat radiation, and fluid mass transfer. The influence of laser power, scanning speed, and other process parameters on temperature, shape, and size of MP was investigated. The simulated results and the experimental validation show that the model predictions are highly consistent with the measured data for most sets laser parameters, especially the MP width of 142 μm vs. 145 μm, depth of 53 μm vs. 56 μm at a laser power of 250 W and a scanning speed of 1000 mm/s, which confirms the reliability and accuracy of the model. Furthermore, the model innovatively forecasts the critical parameters for solidification in MP and delves into the intricate relationship between the position in MP and key parameters such as temperature gradient, cooling rate, and solidification rate. The model's versatility ensures its applicability to SLM simulation processes across diverse alloys and varying parameters. This research not only enhances our comprehension of SLM but also establishes a scientific foundation for optimizing processes, controlling microstructures, and enhancing material performance.
AB - In this study, the three-dimensional (3D) finite element model of COMSOL Multiphysics was used to simulate the thermodynamic behavior of the AlSi10Mg molten pool (MP) during selective laser melting (SLM), and the results were verified by multiple groups of single-track SLM experiments. The simulations take into account numerous thermophysical phenomena such as fluid flow, heat conduction, heat radiation, and fluid mass transfer. The influence of laser power, scanning speed, and other process parameters on temperature, shape, and size of MP was investigated. The simulated results and the experimental validation show that the model predictions are highly consistent with the measured data for most sets laser parameters, especially the MP width of 142 μm vs. 145 μm, depth of 53 μm vs. 56 μm at a laser power of 250 W and a scanning speed of 1000 mm/s, which confirms the reliability and accuracy of the model. Furthermore, the model innovatively forecasts the critical parameters for solidification in MP and delves into the intricate relationship between the position in MP and key parameters such as temperature gradient, cooling rate, and solidification rate. The model's versatility ensures its applicability to SLM simulation processes across diverse alloys and varying parameters. This research not only enhances our comprehension of SLM but also establishes a scientific foundation for optimizing processes, controlling microstructures, and enhancing material performance.
KW - AlSi10Mg
KW - Molten pool thermodynamics
KW - Numerical simulation
KW - Selective laser melting
UR - http://www.scopus.com/inward/record.url?scp=85205319999&partnerID=8YFLogxK
U2 - 10.1016/j.jmrt.2024.09.216
DO - 10.1016/j.jmrt.2024.09.216
M3 - 文章
AN - SCOPUS:85205319999
SN - 2238-7854
VL - 33
SP - 2506
EP - 2518
JO - Journal of Materials Research and Technology
JF - Journal of Materials Research and Technology
ER -