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<p>This study investigated the damage degree of tungsten carbide particles in nickel-based alloy coatings with different tungsten carbide contents and proposed a damage prediction model based on elemental changes. Results show that with increasing tungsten carbide content, the particle damage increases and promotes carbide precipitation, and the damage degree is negatively correlated with the particle size. The damage process was further accelerated by increasing the melting temperature and processing time. Nanoindentation tests showed that the carbides had higher hardness than γ-Ni, but lower elasticity. The relationship between carbide content, particle damage, and mechanical properties was comprehensively analyzed by combining the model with various characterization techniques. The proposed damage prediction model provides important theoretical guidance for optimizing coating properties and improving industrial hardness and wear resistance.</p>

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Analysis of the Damage Behavior of WC Particles and Microscale Mechanical Properties based on the Damage Degree Model

  • 期刊论文

  • 发表日期：

    2025年4月25日

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  • Li Zhang,
  • Chunlin Zhang,
  • Shengli Li,
  • Kailiang Qiu,
  • Lianghai Feng,
  • Zhiwen Xie

摘要

This study investigated the damage degree of tungsten carbide particles in nickel-based alloy coatings with different tungsten carbide contents and proposed a damage prediction model based on elemental changes. Results show that with increasing tungsten carbide content, the particle damage increases and promotes carbide precipitation, and the damage degree is negatively correlated with the particle size. The damage process was further accelerated by increasing the melting temperature and processing time. Nanoindentation tests showed that the carbides had higher hardness than γ-Ni, but lower elasticity. The relationship between carbide content, particle damage, and mechanical properties was comprehensively analyzed by combining the model with various characterization techniques. The proposed damage prediction model provides important theoretical guidance for optimizing coating properties and improving industrial hardness and wear resistance.