SiC/Al复合材料增材制造研究现状及发展趋势(修改后提交)

Additive Manufacturingof SiC/Al Composites: Current Research and Future Trends

  • 摘要: 铝基碳化硅(SiCp/Al)复合材料凭借其高强度、轻量化及优异的热稳定性,已成为航空航天卫星支架、导弹惯导器件、高功率电子封装等高端装备的关键结构-功能一体化材料。然而,采用传统制造方法+机械加工的方法因SiC增强相高硬度导致刀具异常磨损、切削热累计等问题,普遍存在材料利用率不足35%、复杂构件生产周期超45天、产品合格率低等技术瓶颈。增材制造技术通过离散-堆积成形原理突破几何约束,在实现复杂构件近净成形的同时,可缩短制造周期,为SiCp/Al复合材料提供了颠覆性制造方案。本文聚焦选区激光熔化技术(SLM),系统综述了SiCp/Al复合材料选区激光熔化(SLM)增材制造技术研究现状以及存在的问题,并对其应用领域以及面临的挑战和未来的发展趋势进行研究论述。

     

    Abstract: Aluminum matrix composites reinforced with silicon carbide (SiCp/Al) have been extensively applied in aerospace, transportation, defense, and electronic packaging industries owing to their superior strength-to-weight ratio, thermal stability, and wear resistance. However, conventional manufacturing methods for SiCp/Al composites face significant challenges due to the inherent characteristics of the material, such as the high hardness and brittleness of ceramic reinforcements. Issues including low material utilization, prolonged production cycles (exceeding 45 days for complex components), and inconsistent product quality severely limit their industrial application. Additive manufacturing (AM) technology, recognized as a sustainable manufacturing paradigm, offers innovative solutions through its capacity for near-net-shape fabrication of complex geometries with minimal material waste and reduced tooling requirements. This review systematically analyzes the current research progress and technical barriers in selective laser melting (SLM) of SiCp/Al composites, with particular emphasis on unresolved issues such as inhomogeneous particle distribution . Furthermore, it critically examines potential applications in lightweight aerospace components and thermal management systems, while discussing emerging strategies like gradient interface design and hybrid AM processes to address existing challenges.

     

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