TiCN/AlSi10Mg复合材料激光选区熔化过程多物理场建模及数值模拟

doi:10.11896/cldb.24070044

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Abstract Current scholarly investigations into the mechanisms underlying the role of ceramic particulate reinforcement within the context of laser additive manufacturing for metal matrix composites remain significantly constrained. This study employed selective laser melting (SLM) to fabricate TiCN-reinforced AlSi10Mg metal matrix composites (MMCs), and investigated the impact of varying scan speeds at a laser power of 300 W on the melt pool thermodynamics and particle motion behavior. A multiphase flow model incorporating solid, liquid, and gas phases was established, and by coupling the phase-field (PF) method with a particle tracking model, the particle motion was successfully simulated. The findings show that the numerical simulations agreed well with experimental results, validating the effectiveness of the constructed model. The SLM process consists of melting collapse, wetting spreading, and cooling solidification stages. Both the amplitude of melt pool surface fluctuations and melt pool velocity decrease with increasing scan speed. Vaporization recoil pressure, Marangoni forces, and surface tension are the primary driving forces of melt pool evolution, causing melt pool depression, vortex formation, and surface oscillations, respectively. Notably, Marangoni-induced vortices significantly influenced the rearrangement and dispersion of ceramic particles within the melt pool, providing an effective physical mechanism for controlling the uniform distribution of the reinforcement phase.

Key words： selective laser melting ceramic reinforced particles molten pool evolution driving forces particle dispersion mechanisms

Published: 10 August 2025 Online: 2025-08-13

CLC number:

TB333

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	Articles by authors
	NI Xiaonan
	WANG Ansen
	HU Zijian
	YANG Wenxin
	LUO Yongkang
	HU Zhenjie
	DENG Xin

Cite this article:

NI Xiaonan,WANG Ansen,HU Zijian, et al. Multi-physics Modeling and Numerical Simulation of Selective Laser Melting Process of TiCN/AlSi10Mg Composites[J]. Materials Reports, 2025, 39(15): 24070044-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24070044 OR https://www.mater-rep.com/EN/Y2025/V39/I15/24070044

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