U, W.; Yu, S.; Chen, C.; Shi, L.; Xu, S.; Shuai, S.; Hu, T.; Liao,

U, W.; Yu, S.; Chen, C.; Shi, L.; Xu, S.; Shuai, S.; Hu, T.; Liao, H.; Wang, J.; Ren, Z. Effects of Static Magnetic Field on the Microstructure of Selective Laser Melted Inconel 625 Superalloy: Numerical and Experiment Investigations. Metals 2021, 11, 1846. ten.3390/met11111846 Academic Editors: Thomas Niendorf and Maciej Motyka Received: 6 October 2021 Accepted: 15 November 2021 Published: 17 NovemberPublisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and trans-Ned 19 Membrane Transporter/Ion Channel institutional affiliations.Abstract: Quite a few researchers have reported that a static magnetic field (SMF) will have an effect on the procedure of selective laser melting (SLM), which is achieved mainly through affecting molten pool evolution and microstructure growth. Even so, its underlying mechanism has not been fully CC 122 Epigenetic Reader Domain understood. In this operate, we carried out a complete investigation on the influence of SMF around the SLM Inconel 625 superalloy via experiments and multi-scale numerical simulation. The multi-scale numerical models with the SLM method involve the molten pool and also the dendrite within the mushy zone. For the molten pool simulation, the simulation results are in great agreement with the experimental outcomes concerning the pool size. Beneath the influence in the Lorentz force, the dimension with the molten pool, the flow field, along with the temperature field usually do not have an clear alter. For the dendrite simulation, the dendrite size obtained in the experiment is employed for establishing the dendrite geometry inside the dendrite numerical simulation, and our findings show that the applied magnetic field mostly influences the dendrite growth owing to thermoelectric magnetic force (TEMF) on the strong iquid interface in lieu of the Lorentz force inside the molten pool. Since the TEMF around the strong iquid interface is affected by the interaction involving the SMF and thermal gradient at diverse places, we changed the SLM parameters and SMF to investigate the effect on the TEMF. The simulation shows that the thermoelectric present is highest at the solid iquid interface, resulting in a maximum TEMF in the solid iquid interface and, as a result, affecting the dendrite morphology and promoting the columnar to equiaxed transition (CET), that is also shown within the experiment outcomes beneath 0.1 T. Moreover, it is actually recognized that the thermoelectric magnetic convection (TEMC) about the dendrite can homogenize the laves phase distribution. This agrees nicely together with the experimental final results, which show decreased Nb precipitation from eight.65 to four.34 below the SMF of 0.1 T. The present perform can offer potential guidance for microstructure manage inside the SLM procedure making use of an external SMF. Keywords: selective laser melting (SLM); static magnetic field (SMF); Inconel 625 superalloy; thermoelectric magnetic force (TEMF); laves phaseCopyright: 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access post distributed beneath the terms and circumstances in the Creative Commons Attribution (CC BY) license (licenses/by/ four.0/).1. Introduction Compared with classic manufacturing processes, selective laser melting (SLM), as a typical additive manufacturing (AM) approach, can make fine microstructures due to its complex physical behaviors with big thermal gradient, high solidification price, and local temperature variations caused by the repeated heating and melting [1]. SLM may be employed for rapid prototyping by melting metal powders layer-by-layer applying a hea.