基于灰色关联度分析的不锈钢离子渗氮层对磨损性能的影响
Influence of ion nitriding coating on wear properties of stainless steel based on grey correlation degree analysis
张碧清 1韩啸 1贺瑞军 1朱硕 1王赟 1郭凯宇1
作者信息
- 1. 中国航发北京航空材料研究院钢与稀贵金属研究所,北京 100095
- 折叠
摘要
通过正交试验和灰色关联度分析研究了 1Cr11Ni2W2MoV马氏体不锈钢渗氮层特性对磨损性能影响的主次关系和规律.采用光学显微镜观察渗氮层显微组织,并采用金相法测量渗层厚度;采用XRD衍射仪分析渗层表面物相;采用维氏硬度计测定渗层表面硬度和硬度梯度;采用SRV摩擦磨损试验机测试渗氮层摩擦磨损性能,并用白光干涉三维表面轮廓仪测定磨痕最大深度和磨损体积,用扫描电镜分析磨损机理.通过灰色关联度分析研究了表面硬度、硬度梯度和渗氮层厚度等渗氮层特性对磨损性能的影响.结果表明,不锈钢渗氮层发生的磨损破坏主要是通过磨粒磨损、黏着磨损和局部疲劳剥落产生;在恒定大载荷200 N条件下,表面硬度、硬度梯度和渗氮层厚度均显著影响其磨损性能,其中渗氮层厚度对磨损性能的影响最显著,随着渗氮层厚度增加,磨损性能下降.
Abstract
Through orthogonal test and grey correlation degree analysis,the primary and secondary relationship and rule of influence of nitrided layer of 1Cr11Ni2W2MoV martensitic stainless steel on wear performance were studied.The microstructure of nitrided layer was observed by optical microscope,and the thickness of nitrided layer was measured by metallography.The surface phase of the nitrided layer was analyzed by means of XRD diffractometer.The surface hardness and hardness gradient of the nitrided layer were measured by Vickers hardness tester.The friction and wear properties of nitrided layer were measured by SRV friction and wear testing machine,the maximum wear depth and wear volume were measured by white light interference 3D surface profilometer,and the wear mechanism was analyzed by scanning electron microscope.The influence of surface hardness,hardness gradient and thickness of nitrided layer on wear properties was studied by grey correlation analysis.The results show that the wear failure of stainless steel nitrided layer is mainly caused by abrasive wear,adhesive wear and local fatigue spalling.The surface hardness,hardness gradient and thickness of nitrided layer have significant effects on the wear performance under the condition of constant large load 200 N,and the thickness of nitrided layer has the most significant effect on the wear performance,and the wear performance decreases with the increase of the thickness of nitrided layer.
关键词
马氏体不锈钢/离子渗氮/灰色关联度分析/磨损Key words
martensitic stainless steel/ion nitriding/grey relational degree analysis/wear引用本文复制引用
基金项目
北京航空材料研究院创新基金(KZ0C210325)
出版年
2024
NETL
NSTL
万方数据