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Microstructure and Wear Properties of Ni-W-Si Coatings by Laser Cladding

机译：激光熔覆Ni-W-Si涂层的组织与磨损性能

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摘要

Ni-W-Si intermetallic composite coatings consisting of primary tungsten dendrites and eutectic W/WSi2 were fabricated on 45 steel by laser cladding process using Ni-W-Si powers.The microstructure and composition of the coatings was characterized by SEM, XRD and EDS.The effect of the W content on the hardness and wear resistance of coatings was investigated.Results indicate that attributed to the high hardness and toughness of tungsten dendrites and fine and compact eutectic W/WSi2, coatings had high hardness (the highest being 950HV) and the wear resistance was elevated to 4～8 times higher.
机译：在45钢上采用Ni-W-Si功率激光熔覆工艺制备了由初生枝晶和共晶W / WSi2组成的Ni-W-Si金属间复合涂层。通过SEM，XRD和EDS对涂层的显微组织和成分进行了表征。研究了钨含量对涂层硬度和耐磨性的影响。结果表明，由于钨枝晶的高硬度和韧性以及细致致密的W / WSi2共晶，涂层具有较高的硬度（最高为950HV）。耐磨性提高到4〜8倍。

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  • 来源
    《Structural Integrity Solutions》|2014年|421-426|共6页
  • 会议地点 Lanzhou(CN)
  • 作者

    Xiaopeng Liu; Peilei Zhang; Hua Yan; Yunlong Lu; Zhishui Yu; Chonggui Li; Qinghua Lu;

  • 作者单位

    School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;

    Research Development Center for Key Technologies of Intelligent Equipments of Ultra-Intense Laser Processing,Shanghai 201620,China;

    School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;

    Research Development Center for Key Technologies of Intelligent Equipments of Ultra-Intense Laser Processing,Shanghai 201620,China;

    School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;

    Research Development Center for Key Technologies of Intelligent Equipments of Ultra-Intense Laser Processing,Shanghai 201620,China;

    School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;

    Research Development Center for Key Technologies of Intelligent Equipments of Ultra-Intense Laser Processing,Shanghai 201620,China;

    School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;

    Research Development Center for Key Technologies of Intelligent Equipments of Ultra-Intense Laser Processing,Shanghai 201620,China;

    School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;

    Research Development Center for Key Technologies of Intelligent Equipments of Ultra-Intense Laser Processing,Shanghai 201620,China;

    School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;

    Research Development Center for Key Technologies of Intelligent Equipments of Ultra-Intense Laser Processing,Shanghai 201620,China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 断裂理论;
  • 关键词

    Coating; Laser cladding, Microhardness, Microstructure;

    机译：涂层；激光熔覆；显微硬度；显微组织;

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