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首页> 外文期刊>Composite Structures >Laser additive manufactured WC reinforced Fe-based composites with gradient reinforcement/matrix interface and enhanced performance
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Laser additive manufactured WC reinforced Fe-based composites with gradient reinforcement/matrix interface and enhanced performance

机译：激光添加剂制造的WC增强的铁基复合材料，具有梯度增强/基体界面和增强的性能

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摘要

Laser additive manufacturing has been proved to be a new technology for production of high-performance metal matrix composites with tailored interfacial structures. The WC particle reinforced Fe-based composites were manufactured by selective laser melting to investigate the effects of laser processing parameters on densification, microstructure and mechanical properties. The densification level increased with increasing laser power and decreasing scanning speed. The novel gradient interface formed around WC particles due to the in-situ reaction between WC particle and Fe-based matrix. After the optimization of laser processing conditions, the microhardness enhanced to 511.6 HV0.2 and a low friction coefficient of 0.30 was achieved with a low wear rate of 3.1 x 10(-5) mm(3)/(Nm). The improvement in wear performance attributed to the synergistic effect of gradient interface, enhanced densification and novel microstructure.
机译：激光增材制造已被证明是生产具有定制界面结构的高性能金属基复合材料的新技术。通过选择性激光熔融制备WC颗粒增强的铁基复合材料，以研究激光加工参数对致密化，微观结构和机械性能的影响。致密化程度随激光功率的增加和扫描速度的降低而增加。由于WC颗粒与Fe基基体之间的原位反应，在WC颗粒周围形成了新的梯度界面。在优化了激光加工条件之后，显微硬度提高到511.6 HV0.2，并且以3.1 x 10（-5）mm（3）/（Nm）的低磨损率实现了0.30的低摩擦系数。磨损性能的改善归因于梯度界面的协同效应，增强的致密化和新颖的微观结构。

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  • 来源
    《Composite Structures》 |2018年第5期|387-396|共10页
  • 作者

    Gu Dongdong; Ma Ji; Chen Hongyu; Lin Kaijie; Xi Lixia;

  • 作者单位

    Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Laser additive manufacturing; Metal-matrix composite (MMCs); Gradient interface; Mechanical performance;

    机译：激光增材制造;金属基复合材料（MMCs）;梯度界面;机械性能;

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