国外文献 > 1.轴承 > 3. 材料与制造 > 轴承材料
关键词搜索：
| 标 题： |
Confirming dark groove microstructural alterations as WEC initiation first stage in cylindrical roller thrust bearings lubricated with WEC critical oil
确认在使用WEC临界油润滑的圆柱滚子推力轴承中，深沟微结构变化为WEC初始阶段 |
| 作 者： |
Lopez-Urunuela, Fernando Jose
Macareno, Luis Maria
Pinedo, Bihotz
Aguirrebeitia, JosuLopez-Urunuela, Fernando Jose
Macareno, Luis Maria
Pinedo, Bihotz
Aguirrebeitia, Josu |
| 关键词： |
Rolling contact fatigue [滚动接触疲劳]
Bearing steel [ 轴承钢]
White etching cracks [ 白色蚀刻裂纹]
Microstructural alteration [ 微观结构变化]
Optical microscopy [ 光学显微镜]
Electron microscopy [ 电子显微镜] |
| 出版年： |
2024 |
| 期刊名： |
Wear
穿戴 |
| 年卷期： |
2024, vol.550-551 |
| 摘 要： |
In a recent work, after conducting disc-on-disc tests under the influence of hydrogen, the authors identified microstructure alterations, the so-called dark grooves, as possible initial stages of WEC formation. In this work, the aim is to investigate whether dark grooves also constitute the initial stages of WEC in cylindrical roller thrust bearings (CRTBs) tested under the influence of WEC-critical oils. BEM simulations of the roller/washer contact were conducted to identify the coordinates of the maximum subsurface shear stresses, the region in which the first stages of failure are likely to start. Subsequently, CRTB tests were carried out, where prematurely stopped bearings were characterized considering the BEM results. The initial signs of failure i.e., the dark grooves consisting of nanopores and nanograins, were found in the maximum subsurface shear stress regions indicated by the BEM simulations.
在最近的一项研究中，研究人员在氢气影响下进行了盘对盘测试，发现所谓的暗槽（dark grooves）可能为WEC（微裂纹）形成的初始阶段。本研究旨在探究在WEC临界油液作用下测试的圆柱滚子推力轴承（CRTB）中，暗槽是否也构成WEC的初始阶段。通过有限元建模（BEM）模拟了滚子与垫圈的接触状态，以确定最大内部剪应力区域的位置，即首次失效可能开始发生的区域。随后，开展了CRTB测试，并结合BEM结果对提前停止运行的轴承进行分析。结果显示，在BEM模拟所指示的最大内部剪应力区域中，出现了由纳米孔和纳米晶粒组成的暗槽，这些是失效的初期征兆。 |
| 中文内容为网络AI翻译，专业术语未必准确，仅供参考。 |
京公网安备 11010202009788