飞秒激光旋转钻削 SiCf/SiC 复合材料近无锥度孔的形成机理

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-04-11 DOI:10.1016/j.compositesa.2025.108945

Feng Yang, Yan Bao, Zhaoji Li, Xiaodong Fan, Guangyi Ma, Zhigang Dong

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引用次数: 0

摘要

针对SiCf/SiC复合材料小孔加工质量与加工效率难以结合的问题，提出了一种两步飞秒激光旋转打孔（FLRD）方法。提出了激光能量流线和网格分析方法，掌握了激光能量流在钻孔精加工过程中的分布，揭示了锥形盲孔轮廓的形成机理，阐明了小孔轮廓从锥形盲孔到锥形基孔再到近无锥孔的演变过程。在50秒内，获得了直径为300µm，长径比为10，锥度为0.03°的孔。不同进给深度下的孔廓形与预测结果一致，验证了孔廓形模型的有效性。揭示了FLRD的孔廓形成机理，为SiCf/SiC复合材料冷却孔的加工提供了理论支持。

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The formation mechanism of nearly taper-free holes by femtosecond laser rotary drilling of SiCf/SiC composites

A two-step femtosecond laser rotary drilling (FLRD) method is proposed to address the difficulty combining the quality and processing efficiency of small holes in SiC_f/SiC composites. The laser fluence line and mesh analysis methods are proposed to grasp the distribution of laser fluence in the drilling and finishing process, reveal the formation mechanism of the tapered blind hole profile, and elucidate the evolution of the small hole profile from tapered blind hole to tapered base-hole and then to nearly taper-free hole. In 50 s, a hole with a diameter of 300 µm, an aspect ratio of 10, and a taper of 0.03° was achieved.The hole profiles at different feed depths were consistent with the predicted results, which verified the validity of the hole profile model. The hole profile formation mechanism of FLRD is revealed, which provides theoretical support for the processing of cooling holes in SiC_f/SiC composites.

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.