Abstract Based on critical reviews of the well-known dependence of fretting process upon the sliding amplitude, experiments were performed to verify this dependence. One of the main critical points is that the experiments which led to this result were performed controlling the imposed displacement amplitude instead of the real sliding amplitude. Therefore, the difference between the real displacement amplitude and the imposed amplitude due to compliances of the test rigs components was not considered. Fretting tests were performed using a high precision test rig. One of the main peculiarities of this test rig is that there is no difference between the imposed sliding amplitude and the real amplitude. The fretting process parameters of experiments were room temperature, two normal load (contact pressure 15, 25 MPa), four strokes (10, 15, 20, 50 μm), two martensitic stainless steels (X20Cr13, M152) and different durations from 15 to 160 M-cycles. Friction coefficient was computed using the hysteresis loops measured during the wear test. The worn surfaces were measured using an optical instrument based on focus variation. Wear volumes were accurately computed with a procedure that takes in to account the roughness of the surfaces. Results show that the friction coefficient is independent of slip amplitude, normal load and steel type if the hysteresis loops shape is parallelogrammatic and the contact surfaces are effectively conformal. When these conditions are not observed, the friction coefficient is dependent on normal load, even in contrast with its increase. Wear volume shows linear evolution in gross slip regime while it is non-linear in partial slip. Wear rate is independent of slip amplitude and normal load in partial slip regime at low ratio amplitude contact length. In contrast, wear rate depends on slip amplitude and exhibits a sharp increase near the transition partial-gross slip.

中文翻译：

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马氏体不锈钢的部分总滑动微动转变

摘要 基于对众所周知的微动过程对滑动幅度的依赖性的批判性评论，进行了实验以验证这种依赖性。主要的关键点之一是导致这一结果的实验​​是控制施加的位移幅度而不是实际的滑动幅度。因此，没有考虑由于试验台组件的柔量而导致的实际位移幅度和施加幅度之间的差异。微动测试使用高精度测试台进行。该试验台的主要特点之一是施加的滑动幅度与实际幅度之间没有差异。实验微动加工工艺参数为常温、二次法向载荷（接触压力15、25 MPa）、四冲程（10、15、20、50 μm），两种马氏体不锈钢（X20Cr13、M152）和从 15 到 160 M 循环的不同持续时间。摩擦系数是使用在磨损测试期间测量的滞后回线计算的。使用基于焦点变化的光学仪器测量磨损表面。磨损量是通过考虑表面粗糙度的程序准确计算的。结果表明，如果磁滞回线形状为平行四边形且接触面有效共形，则摩擦系数与滑动幅度、法向载荷和钢材类型无关。如果没有观察到这些条件，摩擦系数取决于正常负载，即使与它的增加相反。磨损量在总滑动状态下呈线性演变，而在部分滑动中则呈非线性变化。在低比率振幅接触长度的部分滑动状态下，磨损率与滑动振幅和法向载荷无关。相比之下，磨损率取决于滑移幅度，并在过渡部分总滑移附近急剧增加。