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Effect of (Ti, Mo)_xC Particle Size on Wear Performance of High Titanium Abrasion-resistant Steel

机译：（TI，MO）_XC粒径对高钛耐磨钢磨损性能的影响

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摘要

TiC is a widely used reinforcement in wear-resistant materials. In recent years, many researchers have studied the effect of TiC on wear resistance, and the size of TiC particles is often perceived to influence the wear resistance. However, when the size of TiC particles changes, the composition or hardness of the experimental steel also changes. In this study, (Ti, Mo)_xC-reinforced steels with the same composition were prepared though melt solidification processing using stepped molds of variable thicknesses to exclude the influence of the composition and hardness of the steel on the abrasion resistance. The solidification rate was varied by the thickness of billets, which directly affected the nucleation and growth rates of the (Ti, Mo)_xC particles. The size of the (Ti, Mo)_xC particles in the (Ti, Mo)_xC-reinforced steels varied between 1.88 and 3.20 μm. The three-body abrasive wear behavior of the (Ti, Mo)_xC-reinforced steels was determined using a wet sand/rubber wheel testing machine and the wear morphology was observed using scanning electron microscopy. The results indicated that the three-body abrasive wear mechanism of the (Ti, Mo)_xC-reinforced steels was mainly pits and micro-cuttings. As the size of the (Ti, Mo)_xC increased, the wear resistance of the (Ti, Mo)_xC-reinforced steels decreased. Larger stress occurred owing to different thermal expansion coefficients between the coarse particle and the surrounding matrix, which was more conducive to crack initiation and propagation. The optimum abrasion resistance of the (Ti, Mo)_xC-reinforced steel was 1.76 times that of traditional low alloy wear-resistant steel with similar hardness.
机译：TIC是耐磨材料中的广泛使用的加固。近年来，许多研究人员研究了TIC对耐磨性的影响，往往认为TIC颗粒的尺寸以影响耐磨性。然而，当TIC粒子的尺寸变化时，实验钢的组成或硬度也会发生变化。在本研究中，使用使用可变厚度的阶梯模具的熔融凝固处理来制备具有相同组成的具有相同组合物的_XC增强钢，以排除钢的组合物和硬度对耐磨性的影响。凝固率因坯料的厚度而变化，其直接影响（Ti，Mo）_XC颗粒的成核和生长速率。 （Ti，Mo）_XC增强钢中（Ti，Mo）_xc颗粒的大小在1.88和3.20μm之间变化。使用湿砂/橡胶轮试验机测定（Ti，Mo）_XC增强钢的三体磨料磨损行为，使用扫描电子显微镜观察磨损形态。结果表明（TI，MO）_XC加筋钢的三体磨料磨损机理主要是坑和微扦插。随着（Ti，Mo）_xc的尺寸增加，（Ti，Mo）_xc-encolced钢的耐磨性降低。由于粗颗粒和周围基质之间的不同热膨胀系数而发生较大的应力，这更有利于开采和繁殖。 （Ti，Mo）_XC增强钢的最佳耐磨性是具有相似硬度的传统低合金耐磨钢的1.76倍。

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  • 来源
    《ISIJ international》 |2021年第3期|985-992|共8页
  • 作者

    Qi WANG; Xiangtao DENG; Long HUANG; Tianliang FU; Ye JIA; Chengru LI; Zhaodong WANG;

  • 作者单位

    State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 China;

    State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 China;

    State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 China;

    State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 China;

    State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 China;

    State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 China;

    State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    (Ti,Mo)_xC; particles size; wear resistant steel; three-body abrasive wear;

    机译：（TI;MO）_XC;粒子尺寸;耐磨钢;三体磨料磨损;

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