Abstract

Rail steel samples have been tested for abrasive wear and sliding wear. It is shown that the wear resistance of rail steel is mainly determined by the carbon content therein and by the dispersity and structural homogeneity thereof: with increasing carbon content in the rail steel, the wear resistance exhibits an increase due to a decrease in the interlamellar distance of pearlite, as well as to a decrease in the amount of excess ferrite. Also, increasing chromium amount in steel promotes an increase in wear resistance. It has been found that the wear resistance of rail steel depends on the combination of hardness and plastic properties thereof. A high wear resistance level is predicted for rails made of hypereutectoid steel with a carbon content amounting to about 0.90% and a chromium content of about 0.30%

中文翻译：

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化学成分，组织和力学性能对钢轨耐磨性的影响

摘要

轨道钢样品已经过磨料磨损和滑动磨损测试。结果表明，钢的耐磨性主要取决于钢中的碳含量及其分散性和结构均匀性：随着钢中碳含量的增加，耐磨性由于层间距离的减小而呈现出增加的趋势。珠光体，以及减少过量铁素体的数量。另外，钢中铬含量的增加也促进了耐磨性的提高。已经发现，轨道钢的耐磨性取决于其硬度和塑性。对于碳含量约为0.90％，铬含量约为0.30％的超共析钢制成的钢轨，预计会具有较高的耐磨性