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Tribological investigations of wear resistant layers developed through EDA and WEDA techniques on Ti6Al4V surfaces: Part I – Ambient temperature
Wear ( IF 5.3 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.wear.2020.203409
Jibin T. Philip , Deepak Kumar , Jose Mathew , Basil Kuriachen

Abstract The incompetent tribological behavior of Ti6Al4V (Ti64) poses an imperative need to develop new techniques or improve existing processes for surface characteristic enhancement of the alloy. Given the above, the tribological characteristics of the wear-resistant layers deposited through electrical discharge machining assisted alloying (EDA) and wire electrical discharge machining assisted alloying (WEDA) got investigated at ambient condition. The electrical discharge machined and alloyed Ti64 (ETi64), and wire-electrical discharge machined and alloyed Ti64 (WETi64) specimens demonstrated a decrement (62.89%) and increment (11.01%) in specific wear rate (SWR), respectively as compared to the bare Ti64 (BTi64). The near similar friction and wear behavior associated with the BTi64, and WETi64 is subject to the occurrence of the wear mechanisms, viz. adhesion, abrasion, and delamination. For ETi64 specimens, the continuous squashing and sintering of the spalls/flakes and the ability of the deposited layer (through EDA) to impart ceramic characteristics aided in achieving superior wear-resistant characteristics. They also assist the formation/existence of the distinct oxides (TiO and Ti8O15). The failure of the WEDA specimens during dry interactive sliding attributes to the inadequate thickness of the protective layers and the absence of high carbon (C) diffusion achievable through the utilization of hydrocarbon dielectrics.

中文翻译:

通过 EDA 和 WEDA 技术在 Ti6Al4V 表面上开发的耐磨层的摩擦学研究:第 I 部分 - 环境温度

摘要 Ti6Al4V (Ti64) 的摩擦学性能不佳,迫切需要开发新技术或改进现有工艺以增强合金的表面特性。鉴于上述情况,在环境条件下研究了通过电火花加工辅助合金化(EDA)和线材电火花加工辅助合金化(WEDA)沉积的耐磨层的摩擦学特性。电火花加工和合金化 Ti64 (ETi64) 和线材电火花加工和合金化 Ti64 (WETi64) 试样分别表现出比磨损率 (SWR) 的减少 (62.89%) 和增加 (11.01%),与裸 Ti64 (BTi64)。与 BTi64 相关的几乎相似的摩擦和磨损行为,和 WETi64 受磨损机制的影响,即。粘附、磨损和分层。对于 ETi64 试样,剥落/薄片的连续挤压和烧结以及沉积层(通过 EDA)赋予陶瓷特性的能力有助于实现卓越的耐磨特性。它们还有助于不同氧化物(TiO 和 Ti8O15)的形成/存在。WEDA 试样在干式交互滑动过程中的失败归因于保护层的厚度不足以及没有通过利用碳氢化合物电介质实现的高碳 (C) 扩散。剥落/薄片的连续挤压和烧结以及沉积层(通过 EDA)赋予陶瓷特性的能力有助于实现卓越的耐磨特性。它们还有助于不同氧化物(TiO 和 Ti8O15)的形成/存在。WEDA 试样在干式交互滑动过程中的失败归因于保护层的厚度不足以及没有通过利用碳氢化合物电介质实现的高碳 (C) 扩散。剥落/薄片的连续挤压和烧结以及沉积层(通过 EDA)赋予陶瓷特性的能力有助于实现卓越的耐磨特性。它们还有助于不同氧化物(TiO 和 Ti8O15)的形成/存在。WEDA 试样在干式交互滑动过程中的故障归因于保护层厚度不足以及没有通过利用碳氢化合物电介质实现的高碳 (C) 扩散。
更新日期:2020-10-01
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