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Effect of laser textured surface with different patterns on tribological characteristics of bearing material AISI 52100
Journal of Central South University ( IF 3.7 ) Pub Date : 2020-09-07 , DOI: 10.1007/s11771-020-4442-7
S. Paul Joshua , P. Dinesh Babu

Chrome steels are used in bearings since they possess high strength and wear resistance. However, when those parts are in service, failure happens due to sliding friction before the lifetime. To improve the durability of the American Iron and Steel Institute (AISI) 52100 chromium steel, in this work, the effect of laser surface texturing (LST) was analyzed. With the different patterns of circle and ellipse comparing with the untextured samples, the wear behavior was investigated using the pin-on-disc tribometer. The lubricant used for wear analysis is semisolid lithium grease National Lubricating Grease Institute lubricant (SKF NLGI-3). Sliding wear analysis was conducted at different loads of 10 N, 30 N and 50 N for the sliding speed of 750 r/min and 1400 r/min. The wear morphology was analyzed using a scanning electron microscope(SEM). The roughness of the samples was found using a white light interferometer. The effect of different patterns like circle and ellipse, alter the friction and wear properties of chromium alloy was observed compared with the untextured samples. LST shows considerable reduction in friction and wear for ellipsoidal pattern compared with the circular pattern because of wear debris and lubricant getting trapped.



中文翻译:

不同图案的激光纹理表面对轴承材料AISI 52100的摩擦学特性的影响

铬钢具有高强度和耐磨性,因此可用于轴承。但是,当这些部件投入使用时,由于使用寿命之前的滑动摩擦而发生故障。为了提高美国钢铁协会(AISI)52100铬钢的耐用性,在这项工作中,分析了激光表面纹理化(LST)的效果。通过将圆和椭圆的图案与未织构的样品进行比较,使用针盘式摩擦计研究了磨损行为。磨损分析所用的润滑剂是半固态锂基润滑脂,国家润滑脂协会的润滑剂(SKF NLGI-3)。在750 r / min和1400 r / min的滑动速度下,在10 N,30 N和50 N的不同载荷下进行了滑动磨损分析。使用扫描电子显微镜(SEM)分析磨损形态。使用白光干涉仪发现样品的粗糙度。与未织构的样品相比,观察到诸如圆形和椭圆形的不同图案对铬合金的摩擦和磨损性能的影响。与圆形图案相比,LST显示出椭圆形图案的摩擦和磨损显着降低,这是因为磨损碎片和润滑剂被捕获了。

更新日期:2020-09-08
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