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<p>This study evaluates the mechanical performance and microstructural behavior of Fe-Cu composites reinforced with synthetic diamond particles for sandstone cutting applications. Four composite formulations were developed to examine the influence of Mn, P, and varying Cu content on hardness, strength, wear resistance, and diamond retention. The microstructural analysis revealed that Mn addition promotes grain refinement, enhancing wear resistance, while P significantly increases hardness. Diamond particles remained structurally intact and were largely well distributed within the matrix, forming strong initial interfaces with the Cu-rich regions. Mechanical properties and diamond retention improved with moderate Cu content due to enhanced sintering but deteriorated at higher concentrations due to phase separation and mechanical incompatibility between Fe and Cu. In summary, the study provides insights for optimizing Fe-Cu diamond composites for improved durability and cutting performance.</p>

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Microstructural Evolution and Mechanical Behavior of Diamond-Reinforced Fe-Cu Composites

  • 期刊论文

  • 发表日期：

    2026年3月6日

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  • Vijander Kumar,
  • Shivam Singh,
  • Nitin Kumar Sharma,
  • Jaiveer Singh

摘要

This study evaluates the mechanical performance and microstructural behavior of Fe-Cu composites reinforced with synthetic diamond particles for sandstone cutting applications. Four composite formulations were developed to examine the influence of Mn, P, and varying Cu content on hardness, strength, wear resistance, and diamond retention. The microstructural analysis revealed that Mn addition promotes grain refinement, enhancing wear resistance, while P significantly increases hardness. Diamond particles remained structurally intact and were largely well distributed within the matrix, forming strong initial interfaces with the Cu-rich regions. Mechanical properties and diamond retention improved with moderate Cu content due to enhanced sintering but deteriorated at higher concentrations due to phase separation and mechanical incompatibility between Fe and Cu. In summary, the study provides insights for optimizing Fe-Cu diamond composites for improved durability and cutting performance.