电流作用下哈德菲尔德钢与C45钢干滑动时接触层FeO浓度梯度的研究

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2025-09-29 DOI:10.1016/j.wear.2025.206361

Marina Aleutdinova, Viktor Fadin

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引用次数: 0

摘要

研究了X120Mn12钢（试样）在高电流密度（>100 A/cm2）下与淬火C45钢（基体）干滑动的摩擦学行为。滑动采用标准销环加载配置。检测到厚度小于20 μm的传递层的形成，并以接触面天然涂层的形式获得了传递层的视觉图像。测定了镀层的原子组成和相组成。试样磨损表面有两种不同机理的劣化。其中一个区域有熔体形成的迹象。同时，还显示了反体接触面上的熔体。熔体中含有铁、氧、锰和碳。提出了熔体形成机理。熔体只能在滑动条件下和电流下存在。这就可以解释摩擦系数的减小、接触电导率的增加以及摩擦强度随接触电流密度的增加而增加的现象。此外，提出的熔体形成机制可以解释在样品磨损表面的一个部分存在磨粒磨损。还注意到转移层（样品和对偶体）中的FeO浓度梯度不能显著影响磨损。

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On gradients of FeO concentration in the contact layer of Hadfield steel in dry sliding against C45 steel under electric current

The tribological behavior of X120Mn12 steel (sample) during dry sliding against quenched C45 steel (counterbody) under high (>100 A/cm²) electric current density was studied. Sliding was performed using standard pin-on-ring loading configuration. The formation of transfer layers lower than 20 μm thick was detected and their visual images were obtained in the form of natural coatings of contact surfaces. The atomic and phase compositions of these coatings were also determined. The sample worn surface had two sectors deteriorated by different mechanisms. One of the sectors had signs of melt formation. The melt on the contact surface of the counterbody was also shown. The melt contained iron, oxygen, manganese and carbon. A mechanism of melt formation was proposed. Melt can exist only under sliding conditions and under current. This made it possible to explain the decrease in the friction coefficient, the increase in the contact conductivity and the increase in the wear intensity with increasing current density in the contact. In addition, the proposed mechanism of melt formation made it possible to explain the presence of abrasive wear in one of the sectors of the sample worn surface. It was also noted that the FeO concentration gradient in the transfer layers (of the sample and of counterbody) is not able to affect wear significantly.

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.