Transfer during unlubricated sliding wear of selected metal systems

Effects of Dry Sliding Wear of Wrought Al-Alloys on Mechanical Mixed Layers (MML)

“…Heavy plastic deformation and shear strains in the worn surface give rise to dislocation cells and elongated subgrains, as seen in i.e; Fig. 2, which is consistent with Heilmann et al (1983), Rigney et al (1981), Chen (1986), Chen and Rigney (1986) and Kuo and Rigney (1992). A is an example of A3004 alloys after 10.8km slid against M2 at 140N.…”

Selection of Best Formulation for Semi-Metallic Brake Friction Materials Development

“…Figure 17b and c show a manifestation of adhesion mechanism. Adhesion wear mechanism composed a process of two-way transfer during sliding caused the formation of transfer layers on both sides of the sliding surfaces (Figure 17b) as observed elsewhere (Kerridge & Lancaster 1956;Chen and Rigney 1985;Talib et al 2003) due to mechanical alloying as reported by Chen at el. (1984).…”

“…Wear process in dry sliding contacts begins with particle detachment from the contact material surface due to formation of plastic deformation, material transfers to the opposite mating surface and formation of mechanical alloyed layers (Chen & Rigney 1985), finally elimination of wear fragments from the tribosystem as the wear debris. Wear mechanism in the operation during braking is a complex mechanism and no single mechanism was found to be fully operating (Rhee, 1973(Rhee, & 1976Bros & Sciesczka, 1977;Jacko et al, 1984;Talib et.…”

Aluminium Alloy-Based Metal Matrix Composites: A Potential Material for Wear Resistant Applications

“…No direct relationship has been found between hardness and wear resistance. Maximum wear resistance has been reported after over ageing [9][10][11][12]. The improvement of sliding wear resistance of particulate MMCs over the control alloy is more evident at lower sliding speeds; at higher speeds the wear rate increases which is in contrast to the control alloy which shows better wear resistance (i.e., lower wear rate) at higher speeds.…”