The present work employed the X-ray diffraction, scanning electron microscopy, electron backscattered diffraction, and electron probe microanalysis techniques to identify the microstructural evolution and mechanical and abrasive behavior of high carbon steel during quenching-partitioning treatment with an aim to enhance the toughness and wear resistance of high carbon steel. Results showed that, with the increase in partitioning temperature from 250 to 400°C, the amount of retained austenite (RA) decreased resulting from the carbide precipitation effect after longer partitioning times. Moreover, the stability of RA generally increased because of the enhanced degree of carbon enrichment in RA. Given the factors affecting the toughness of high carbon steel, the stability of RA associated with size, carbon content, and morphology plays a significant role in determining the toughness of high carbon steel. The analysis of the wear resistance of samples with different mechanical properties shows that hardness is the primary factor affecting the wear resistance of high carbon steel, and the toughness is the secondary one.

本工作采用X射线衍射，扫描电子显微镜，电子反向散射衍射和电子探针显微分析技术来鉴定高碳钢在淬火分配处理过程中的显微组织演变以及机械和磨蚀行为，旨在增强韧性和韧性。高碳钢的耐磨性。结果表明，随着分配温度从250℃升高到400℃，奥氏体残留量（RA）减少是由于较长分配时间后的碳化物沉淀作用所致。而且，由于RA中碳富集度的增加，RA的稳定性通常增加。考虑到影响高碳钢韧性的因素，RA的稳定性与尺寸，碳含量，形态对决定高碳钢的韧性起着重要作用。对不同力学性能的样品的耐磨性分析表明，硬度是影响高碳钢耐磨性的主要因素，而韧性是次要的因素。