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<p>High-carbon wear-resistant steels with varying Ti contents were produced using a vacuum melting and casting method. The effect of Ti content on TiC precipitation and wear resistance of high-carbon steel were investigated in this study. The results show that the size, morphology, and distribution of TiC is influenced by solidification rate and chemical composition. As Ti content increases, the precipitation temperature and average size of TiC rise, leading to a more uniform size and distribution. Higher Ti content also reduces the as-cast grain size, refining the microstructure after heat treatment. The in-situ TiC has little effect on hardness, indicating that effective carbon content is the key factor in enhancing hardness and wear resistance. The wear resistance of high-carbon steel improves with higher Ti content, with micro-cutting and plowing as the dominant wear mechanism. The wear resistance of 1.0Ti steel is 2.5 times that of 0.2Ti steel, it can be attributed to the elevated effective carbon content, augmented TiC quantity, and the ensuing fine-grain strengthening effect.</p>

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Effect of Ti Content on TiC Precipitation and Wear Resistance of High-Carbon Steel

  • 期刊论文

  • 发表日期：

    2025年4月3日

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  • Longxiao Huang,
  • Penghui Yang,
  • Yulong Zheng,
  • Renzhong Lu,
  • Kaiming Wang,
  • Hanguang Fu

摘要

High-carbon wear-resistant steels with varying Ti contents were produced using a vacuum melting and casting method. The effect of Ti content on TiC precipitation and wear resistance of high-carbon steel were investigated in this study. The results show that the size, morphology, and distribution of TiC is influenced by solidification rate and chemical composition. As Ti content increases, the precipitation temperature and average size of TiC rise, leading to a more uniform size and distribution. Higher Ti content also reduces the as-cast grain size, refining the microstructure after heat treatment. The in-situ TiC has little effect on hardness, indicating that effective carbon content is the key factor in enhancing hardness and wear resistance. The wear resistance of high-carbon steel improves with higher Ti content, with micro-cutting and plowing as the dominant wear mechanism. The wear resistance of 1.0Ti steel is 2.5 times that of 0.2Ti steel, it can be attributed to the elevated effective carbon content, augmented TiC quantity, and the ensuing fine-grain strengthening effect.