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采用模铸、连铸两种工艺工业化试制一种TiC颗粒强化型马氏体耐磨钢,分析了TiC颗粒的析出规律,对比研究了试验钢与传统马氏体耐磨钢的组织、力学性能及耐磨性能。试验结果表明:凝固速度越大,TiC析出相越细;轧制压缩比越大,颗粒分布越均匀;TiC颗粒强化马氏体钢强度与传统马氏体钢相当,韧性有所降低;微米级的TiC可以有效提高材料的磨粒磨损性能,试验钢磨损失重仅为同等硬度传统马氏体钢的70%;耐磨性能的提高主要是因为在磨粒磨损条件下,微米级TiC硬质点可以破碎磨砺、钝化尖角、阻断磨痕。
A kind of TiC particle reinforced martensitic wear-resistant steel was industrialized by industrialization of two methods of die-casting and continuous casting. The precipitation regularity of TiC particles was analyzed. The microstructure and mechanical properties of the experimental steel and the traditional martensitic wear- And wear resistance. The results show that the larger the solidification rate, the finer the TiC precipitates, the larger the rolling compression ratio, the more uniform the particle distribution. The strength of TiC particles strengthened martensitic steel is equivalent to that of the traditional martensitic steel, Of TiC can effectively improve the abrasive wear performance of the material, the wear resistance of the test steel is only 70% of that of the traditional martensitic steel with the same hardness; the improvement of the wear resistance is mainly due to the wear resistance of the micron-sized TiC hard point Can be sharpened sharpening, passivation sharp corners, blocking wear marks.