Scholarlink

<p>Incorporating ceramic particles into metal matrices is a proven strategy for boosting mechanical properties and wear resistance. The reinforcement potential of tungsten carbide (WC) particles in 316L stainless steel is revealed, utilizing selective laser melting (SLM) to fabricate composites with 5 and 10&#xa0;vol.% WC. The WC incorporation markedly alters the composite’s microstructure and mechanical attributes. Notably, 5&#xa0;vol.% WC-316L composite exhibits a refined submicron cellular structure, averaging 0.67&#xa0;μm in grain size. Elemental diffusion at WC-316L interface formed a 0.8&#xa0;μm gradient transition layer enriched with M<sub>2</sub>C carbides (Fe, Cr, W), ensuring robust metallurgical bonding. Compared with unreinforced 316L, 5% WC composite exhibits a 70% increase in tensile strength, reaching 1012.6&#xa0;MPa, and a 25.3% rise in hardness, while maintaining acceptable ductility. 10% WC composite achieves a 70.8% hardness enhancement, albeit with reduced elongation. Friction coefficient is reduced by up to 17.3%, and the wear mechanism shifts from adhesive to abrasive, significantly improving wear resistance.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

High-performance 316L stainless steel composites: tailoring microstructure and mechanics with WC reinforcement via selective laser melting

  • 期刊论文

  • 发表日期：

    2025年12月22日

查看全文
  • Hai-Bo Luo,
  • Mao Yang,
  • Bin Han,
  • Zhi-Shuang Hao,
  • Bin-Chao Li,
  • Pei-Yuan Zheng,
  • Qi Zhang

摘要

Incorporating ceramic particles into metal matrices is a proven strategy for boosting mechanical properties and wear resistance. The reinforcement potential of tungsten carbide (WC) particles in 316L stainless steel is revealed, utilizing selective laser melting (SLM) to fabricate composites with 5 and 10 vol.% WC. The WC incorporation markedly alters the composite’s microstructure and mechanical attributes. Notably, 5 vol.% WC-316L composite exhibits a refined submicron cellular structure, averaging 0.67 μm in grain size. Elemental diffusion at WC-316L interface formed a 0.8 μm gradient transition layer enriched with M2C carbides (Fe, Cr, W), ensuring robust metallurgical bonding. Compared with unreinforced 316L, 5% WC composite exhibits a 70% increase in tensile strength, reaching 1012.6 MPa, and a 25.3% rise in hardness, while maintaining acceptable ductility. 10% WC composite achieves a 70.8% hardness enhancement, albeit with reduced elongation. Friction coefficient is reduced by up to 17.3%, and the wear mechanism shifts from adhesive to abrasive, significantly improving wear resistance.