The Effect of Elements of Secondary Structures on the Wear Resistance of Steel in Friction against Experimental Aluminum Alloys for Monometallic Journal Bearings

Abstract

This article describes the elemental composition of secondary structures formed on the steel contact surface during wear test against experimental Al alloys. Wear tests were carried out according to the rotating steel roller-fixed shoe of an antifriction alloy scheme under boundary lubrication conditions. The duration of the test was 40 h, and motor oil M14V2 was used as a lubricant. The microstructure and elemental characterization of the steel surface before and after the tribological test was obtained by scanning electron microscopy equipped with EDX. The simultaneous presence of various constituents of oil, steel, and Al alloys can produce both positive and negative effects on the friction characteristic of the tribosystem. It was shown that presence of Mo, F, S, Si, Ni, and Cr have a favorable effect on the wear resistance of steel and the friction coefficient of the rubbing surfaces due to the formation of secondary structures with optimal composition.

Effect of Milling Conditions on the Microstructural Design in Aluminum Based Alloy Fabricated by SPS

“…Moreover, Mo with its ability to form MoS 2 on the friction surface under lubricated conditions is a favorable additive in obtaining secondary structures. Besides, a previous study has shown that the presence of Mo and Cr acted as a favorable effect on the wear resistance of steel and the friction coefficient of the rubbing surfaces due to the formation of secondary structures with optimal composition [13]. However, the question about the desirability of using these metals in Al-based alloys is multifaceted and complex, and will be considered following a further detailed investigation of the mechanical and tribological behavior of obtained alloys.…”

Relationship of Secondary Structures and Wear Resistance of Antifriction Aluminum Alloys for Journal Bearings from the Point of View of Self-Organization During Friction

“…This paper continues the studies of new antifriction aluminum alloys beginning in [1][2][3][4][5][6][7][8]. Previously, the authors investigated compositions, mechanical and tribological properties of the new antifriction aluminum alloys.…”

“…The tests were carried out in the API CB oil. Details of the test procedures are described in [1][2][3]. The shoes were made of antifriction aluminum alloys.…”

“…Previously, the authors investigated compositions, mechanical and tribological properties of the new antifriction aluminum alloys. In [1,2] the compositions of the secondary structures and mechanisms of their formation on the friction surfaces of aluminum alloys and steel counter-body were investigated.…”

Tribochemical Interaction of Multicomponent Aluminum Alloys During Sliding Friction with Steel

“…This study is a part of an ongoing research aimed at replacing bronzes with aluminum-based alloys [49][50][51]. The goal of the work is to reveal typical processes taking place on the surface of antifriction aluminum alloys during friction.…”