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首页> 外文期刊>Materials Science and Engineering >Effect of nanostructuring frictional treatment on the properties of high- carbon pearlitic steel. Part Ⅱ: mechanical properties
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Effect of nanostructuring frictional treatment on the properties of high- carbon pearlitic steel. Part Ⅱ: mechanical properties

机译：纳米结构摩擦处理对高碳珠光体钢性能的影响。第二部分：力学性能

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摘要

In this second part of the work, the mechanical properties, features of deformation and fracture under static and contact fatigue loading of the high-carbon (1.03 wt% C) steel with a fine-lamellar pearlitic structure have been studied before and after frictional treatment with a sliding indenter. It has been found that the frictional treatment practically does not affect the mechanical properties of the steel under static tension. A method of contact fatigue testing for estimating the contact endurance of thin hardened surface layers has been proposed, which consists in performing contact fatigue tests according to a pulsing non-impact “sphere-to-surface” contact scheme under conditions of repeated elastic-plastic deformation with different maximum loads. It has been established that the frictional treatment increases the fracture resistance of the steel surface under contact fatigue loading, if contact damages are localized in the thin surface layer with maximum hardness and high values of microindentation based parameters. However, the hardened surface layer can endure heavy contact loads until failure and fractures only when contact damages cover the entire layer.
机译：在工作的第二部分中，研究了摩擦处理前后的高碳（1.03 wt％C）具有细层珠光体组织的力学性能，静态和接触疲劳载荷下的变形和断裂特征。用滑动压头。已经发现，摩擦处理实际上不影响钢在静态张力下的机械性能。已经提出了一种用于评估薄的硬化表面层的接触耐久性的接触疲劳测试方法，该方法包括在重复的弹塑性条件下，根据脉冲无冲击“球对表面”接触方案进行接触疲劳测试。不同最大载荷下的变形。已经确定，如果接触损伤位于具有最大硬度和高微压痕参数值的薄表面层中，那么在接触疲劳载荷下，摩擦处理会提高钢表面的抗断裂性能。但是，硬化的表面层可以承受较大的接触载荷，直到失效为止，并且仅当接触损伤覆盖整个层时才破裂。

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