期刊
TRIBOLOGY INTERNATIONAL
卷 113, 期 -, 页码 460-473出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2016.12.049
关键词
Fretting wear; Ti-6Al-4V; Wear modeling; Friction energy
We present fretting wear analysis of a dry Ti-6A1-4V cylinder/plane contact, investigating sliding frequency, contact size, and cyclic normal force effects. The investigation showed that easy contact oxygenation promoted by low contact pressure, low frequency, small contact size and varying normal force favored a U-shape fretting scar morphology and high abrasive wear rates. By contrast, increasing contact pressure, frequency and contact size by reducing the contact oxygenation in the center of the contact promoted adhesive metal/metal interactions, transfers and TTS structures. This induced a W-shape fretting scar and lower wear rates. XPS analyses confirmed this description, highlighting Ti-nitriding processes in the under-oxygenated Ti transfers. A friction energy power density approach is introduced to predict wear rate and the U-to-W shape transition.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据