Response of materials as a function of grinding angle on friction and transfer layer formation
Response of materials as a function of grinding angle on friction and transfer layer formation
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材料对摩擦和转移层形成的响应作为研磨角度的函数
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. Lovell
中科院分区：
文献类型：
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作者：
P. Menezes;Kishore;S. Kailas;M. Lovell
在滑动接触过程中，表面织构影响摩擦和转移层的形成。在目前的调查中，进行了基础研究，使用倾斜的销板滑动装置，以了解摩擦系数和转移层形成的磨痕方向性的效果。在实验中，磨削080 M40钢板，以获得不同的表面粗糙度与单向磨削痕迹。然后将由软材料（纯Al、纯Mg和Al-4 Mg合金）组成的销相对于制备的钢板滑动。磨削角度（滑动方向与磨削痕迹之间的角度）在0°和90°之间变化。实验在周围环境中的干燥和润滑条件下进行。据观察，转移层的形成和摩擦系数主要取决于板磨痕的方向性。对于纯镁销的情况，在干燥条件下对于所有磨削角和在润滑条件下对于大于25°的磨削角观察到粘滑摩擦现象。在铝销的情况下，粘滑现象仅在润滑条件下观察到的角度超过25°。粘滑现象没有发生在任何条件下研究与Al-4 Mg合金销。基于结果，可以得出结论，摩擦和粘滑运动幅度（铝和镁销）的大小主要由犁耕摩擦水平的变化控制。
Surface texture influences friction and transfer layer formation during sliding contact. In the present investigation, basic studies were conducted using an inclined pin-on-plate sliding apparatus to understand the effect of grinding mark directionality on the coefficient of friction and transfer layer formation. In the experiments, 080 M40 steel plates were ground to attain different surface roughness with unidirectional grinding marks. Pins consisting of soft materials (pure Al, pure Mg, and Al–4Mg alloy) were then slid against the prepared steel plates. The grinding angle (angle between direction of sliding and grinding marks) was varied between 0° and 90° in the tests. The experiments were conducted under both dry and lubricated conditions in an ambient environment. It was observed that the transfer layer formation and the coefficient of friction depend primarily on the directionality of the plate grinding marks. For the case of pure Mg pins, a stick-slip friction phenomenon was observed for all grinding angles under dry conditions and for grinding angles over 25° under lubricated conditions. In the case of Al pins, the stick-slip phenomenon was observed only under lubricated conditions for angles exceeding 25°. The stick-slip phenomena did not occur in any of the conditions studied with Al–4Mg alloy pins. Based on the results, it was concluded that the magnitudes of the friction and the stick-slip motion amplitude (for Al and Mg pins) were primarily controlled by changes in the level of plowing friction.