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Friction and wear behaviour of dual phase steels in discontinuous sliding contact conditions as a function of sliding speed and contact frequency

机译:双相钢在不连续滑动接触条件下的摩擦磨损性能与滑动速度和接触频率的关系

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摘要

© 2015 Elsevier Ltd. All rights reserved. Friction and wear rate behaviour of dual phase steel discs (DP600) as a function of sliding speed (0.05-3.75 m/s), and contact frequency (0.6-16.5 Hz) have been studied under unidirectional ball-on-disc dry sliding conditions. The coefficient of friction (COF) and wear rate exhibit not only a highly dependence on the sliding speed, but also on the contact frequency which appears to be the key factor determining the wear behaviour of the DP600 even at constant sliding speed. The wear mechanism is mainly oxidative. The validity of Garcia-Ramil-Celis model is demonstrated for discontinuous sliding contacts at contact frequencies below 7 Hz. However, above 7 Hz, the disc behaves as if it were subjected to a continuous sliding contact.
机译:©2015 Elsevier Ltd.保留所有权利。在单向球盘干式滑动条件下,研究了双相钢盘(DP600)的摩擦磨损率行为与滑动速度(0.05-3.75 m / s)和接触频率(0.6-16.5 Hz)的关系。摩擦系数(COF)和磨损率不仅高度依赖于滑动速度,而且还依赖于接触频率,即使在恒定的滑动速度下,接触频率也是决定DP600磨损行为的关键因素。磨损机理主要是氧化性的。证明了Garcia-Ramil-Celis模型对于接触频率低于7 Hz的不连续滑动接触的有效性。但是,高于7 Hz时,光盘的行为就像是受到连续的滑动接触。

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