In this study, as-cast low alloy wear-resistant steels with Ti contents of 0.6 and 3.0 wt-% were prepared at different solidification cooling rates, and the effects of TiC formation on their microstructures, hardness values, and wear resistances were investigated. The obtained phase diagrams and experimental data revealed that the TiC phase was formed via a divorced eutectic reaction in a residual liquid phase during solidification. The larger Ti content promoted the formation of TiC particles, while the solidification cooling rate represented the main influencing factor. Moreover, the produced TiC phase increased the wear resistance of the studied steel and decreased the matrix hardness, suggesting a new method for enhancing its mechanical properties through the formation of a hard ceramic phase.

中文翻译：

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TiC形成对耐磨钢组织和硬度的影响

在这项研究中，以不同的凝固冷却速率制备了 Ti 含量为 0.6 和 3.0 wt-% 的铸态低合金耐磨钢，并研究了 TiC 的形成对其微观结构、硬度值和耐磨性的影响。获得的相图和实验数据表明，TiC 相是在凝固过程中通过残余液相中的分离共晶反应形成的。较大的Ti含量促进了TiC颗粒的形成，而凝固冷却速度是主要影响因素。此外，生成的 TiC 相提高了所研究钢的耐磨性并降低了基体硬度，这表明了一种通过形成硬质陶瓷相来提高其机械性能的新方法。