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<p>This study investigated the optimization of wear resistance in dual matrix structure (DMS) ferritic ductile cast iron (DCI) for demanding automotive applications. Eight compositions were evaluated, prioritizing Si (2.1–2.5%) and Mn (0.14–0.20%) while minimizing the use of Cr, Ni, and Mo. Key parameters influencing wear behavior, including load, time, nodule count, and DMS volume fraction, were systematically analyzed. Characterization techniques, including XRD, TEM, and SEM, were employed to elucidate the microstructural features and phase composition. Results demonstrated that a judicious balance of Si and Mn content significantly enhanced wear resistance. Furthermore, the presence of Cu precipitates in a specific grade exhibited a pronounced improvement in wear performance. These findings provide valuable insights for the development of cost-effective and high-performance DMS DCI grades tailored for critical automotive components.</p>

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Study of Wear Characteristics for Different Grades of Dual Matrix Structure Ductile Iron

  • 期刊论文

  • 发表日期：

    2025年8月12日

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  • Ventrapragada Bramaramba,
  • Pankaj Shrivastava,
  • Raviteja Vinjamuri,
  • Ajit Behera,
  • Sudipta Sen

摘要

This study investigated the optimization of wear resistance in dual matrix structure (DMS) ferritic ductile cast iron (DCI) for demanding automotive applications. Eight compositions were evaluated, prioritizing Si (2.1–2.5%) and Mn (0.14–0.20%) while minimizing the use of Cr, Ni, and Mo. Key parameters influencing wear behavior, including load, time, nodule count, and DMS volume fraction, were systematically analyzed. Characterization techniques, including XRD, TEM, and SEM, were employed to elucidate the microstructural features and phase composition. Results demonstrated that a judicious balance of Si and Mn content significantly enhanced wear resistance. Furthermore, the presence of Cu precipitates in a specific grade exhibited a pronounced improvement in wear performance. These findings provide valuable insights for the development of cost-effective and high-performance DMS DCI grades tailored for critical automotive components.