Determination of Dry Wear Properties of Zn-30Al-Cu Bearing Alloys in Terms of Their Copper Content and Working Conditions Including Pressure and Sliding Velocity
| Autor: | Temel Savaşkan, Hasan Onur Tan |
|---|---|
| Přispěvatelé: | Giresun Üniversitesi, Mühendislik Fakültesi, Makine Mühendisliği Bölümü, Tan, Hasan Onur |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Alloy chemistry.chemical_element 02 engineering and technology engineering.material Zn-30Al-Cu alloys 01 natural sciences law.invention Abrasion (geology) sliding friction law 0103 physical sciences wear volume General Materials Science Composite material Ductility 010302 applied physics Bearing (mechanical) Mechanical Engineering 021001 nanoscience & nanotechnology Microstructure Copper chemistry Volume (thermodynamics) Mechanics of Materials Casting (metalworking) engineering 0210 nano-technology dry wear |
| Popis: | Five Zn-30Al-Cu alloys were prepared by casting, and their dry wear properties were studied at selected ranges of contact pressure and sliding velocity with a block-on-disk-type tester after investigating their microstructure and mechanical properties. The hardness and the strength of the alloys increased, but their ductility decreased with copper content. The wear volume of the alloys increased with both pressure and sliding velocity, but their friction coefficient showed a slight decrease with pressure. Correlation of the experimental data indicated that the wear volume, friction coefficient and working temperature of the alloys could be determined in terms of their copper content and working conditions including applied pressure and/or sliding velocity. The equations showing the relationships between these properties and the variables are presented in Discussion section. Zn-30Al-3Cu alloy exhibited the second highest quality index and the lowest wear volume among the experimental alloys. Surface and subsurface layers formed in the wear samples of this alloy during the wear tests. Formation of these layers was attributed to the subsurface microstructural changes and adherence of the wear particles to the sample surface. Adhesion was observed to be the dominant wear mechanism for these alloys, but abrasion also played an important role in their wear behavior. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|