Influence of alternative magnetic field on macro morphology and microstructure of laser cladding Fe-based composite coating

Hongxi, 刘洪喜 Liu; Chuanxiong, 蔡川雄 Cai; Yehua, 蒋业华 Jiang; Xiaowei, 张晓伟 Zhang; Chuanqi, 王传琦 Wang

doi:10.3788/ope.20122011.2402

Cited by 3 publications

(1 citation statement)

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“…Many researchers have effectively studied the numerical simulation of electromagnetic field-assisted laser processing. Liu et al investigated the evolution of the macroscopic morphology of laser melting coating using alternating magnetic fields, and the results showed that the alternating electromagnetic force caused the surface morphology of the melting layer to be wavy after solidification [18]. Elsewhere, Wang et al numerically simulated the electromagnetic, temperature, and flow fields of the laser melt pool under electromagnetic stirring; they also experimentally studied the effects of magnetic field stirring on the microstructure and properties of laser-deposited titanium alloys, obtaining a refined lamellar microstructure and improving the mechanical properties of the deposited layer [19].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Dynamic Evolution Mechanism of the Steady Magnetic Field on the Internal Flow Behavior of a Laser Melting Pool

Xie

Wang

et al. 2023

Metals

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A 2D model of laser melting consisting of heat transfer, hydrodynamic flow, surface tension, and a free surface motion was established. A physical field simulation of the laser melting process was performed, and the effect of steady magnetic field parameters on the internal flow and temperature fields of the melt pool was analyzed and validated by experiments. The results show that the steady magnetic field can suppress the melt pool flow rate, but slightly influences its temperature field, and with an increase in the magnetic field strength, the ripples on the melting surface decrease with increasing magnetic flux density. Compared with the molten pool depth experiment results, the simulation molten pool depth was 792 μm, representing a difference in value of 13.5%. The surface ripples of the molten pool fluctuated greatly in the absence of a magnetic field, while the surface ripples were suppressed when the magnetic flux density was 2T. This is consistent with the simulation results, thus effectively demonstrating the simulation model’s accuracy.

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Section: Introductionmentioning

confidence: 99%