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| 细化渗碳体对高碳纳米贝氏体轴承钢的影响 | |
| 引用本文： | 秦羽满,李艳国,张明,张福成,尤蕾蕾,杨志南.细化渗碳体对高碳纳米贝氏体轴承钢的影响[J].中国冶金,2020,30(9):104-109. |
| 作者姓名： | 秦羽满 李艳国 张明 张福成 尤蕾蕾 杨志南 |
| 作者单位： | 1.燕山大学亚稳材料制备技术与科学国家重点实验室, 河北 秦皇岛 066004; 2.燕山大学国家冷轧板带工程技术研究中心, 河北 秦皇岛 066004; 3.航空精密轴承国家重点实验室,河南 洛阳 471039 |
| 基金项目： | 国家自然科学基金资助项目(51871192,51831008); 中国博士后科学基金资助项目(2018M631762); 河北省自然科学基金资助项目(E2020203058); 河北省高校青年人才计划资助项目(BJ2018056); 河北省研究生创新资助项目(CXZZBS2020058) |
| 摘 要： | 研究了GCr15Si1Mo轴承钢中渗碳体细化后,对材料微观组织、常规力学性能、耐磨性及滚动接触疲劳性能的影响。通过工艺的调控,使材料组织中的渗碳体尺寸从0.49细化到了0.20 μm,贝氏体铁素体板条尺寸从66细化至41 nm,并且渗碳体的分布密度也随之提高。随后通过SEM、TEM、XRD、硬度、冲击、摩擦磨损及滚动接触疲劳等试验,得到了材料的宏观性能与微观组织。研究结果表明,细化渗碳体后,材料的耐磨性能和滚动接触疲劳性能比常规工艺的优异,但是韧性相对于常规工艺有显著降低。研究证明了较细小渗碳体可以对轴承钢的组织结构、常规力学性能、耐磨性能及疲劳性能产生一定的影响,为后期轴承钢中渗碳体的调控研究提供支持。 |
| 关 键 词： | 轴承钢 纳米贝氏体 微观组织 渗碳体 磨损 滚动接触疲劳 |
Effect of refined cementite on nanostructured bainitic bearing steel |
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| QIN Yu-man,LI Yan-guo,ZHANG Ming,ZHANG Fu-cheng,YOU Lei-lei,YANG Zhi-nan.Effect of refined cementite on nanostructured bainitic bearing steel[J].China Metallurgy,2020,30(9):104-109. | |
| Authors: | QIN Yu-man LI Yan-guo ZHANG Ming ZHANG Fu-cheng YOU Lei-lei YANG Zhi-nan |
| Affiliation: | 1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei, China; 2. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, Hebei, China; 3. State Key Laboratory of Aviation Precision Bearings, Luoyang 471039, Henan, China |
| Abstract: | The effect of refined cementite on the microstructure, conventional mechanical properties, wear resistance and contact fatigue properties of GCr15Si1Mo bearing steel was studied. Through controlling the heat treatment process, the size of cementite and bainite ferrite lath in the microstructure was refined from 0.49 to 0.20 μm, and 66 to 41 nm, respectively, and the distribution density of cementite also increased. Then through SEM, TEM, XRD, hardness, impact, wear and rolling contact fatigue tests, the macroscopic properties and microstructure of the material were obtained. The results showed that after refining cementite, the wear resistance and rolling contact fatigue property of the specimen were better than that produced by the conventional process, while the toughness was worse. The research proved that the finer cementite can have a certain influence on the microstructure, conventional mechanical properties, wear resistance and rolling contact fatigue property of the bearing steel, which provided support for the later research on the control of cementite in bearing steel. |
| Keywords: | bearing steel nanostructured bainite microstructure cementite wear rolling contact fatigue |
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