Surface integrity and wear evolution of high strength aluminum alloy after high-speed oblique cutting
| Autor: | Yanchun Zhai, Liying Li, Youqiang Wang, Ping Zhang, Xiao Yu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Computer simulation Mechanical Engineering Alloy Oblique cutting chemistry.chemical_element Surfaces and Interfaces engineering.material Surfaces Coatings and Films Mechanism (engineering) chemistry Residual stress Aluminium engineering Profilometer Composite material Surface integrity |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. 236:881-891 |
| ISSN: | 2041-305X 1350-6501 |
| DOI: | 10.1177/13506501211040610 |
| Popis: | In this paper, we present an experimental study on the surface frictional wear mechanism of the high-strength aluminum alloy after high-speed milling. We use a surface profilometer and an X-ray stress tester to characterize the milled surface integrity of the material, and UMT-3 friction testing machine to obtain its surface roughness, oxygen content, hardness, and wear morphology during different wear stages. The results show that milling-induced residual tensile stress makes the cut surface more prone to fatigue cracking and consequently abrasive wear in the initial wear stage. The larger the angle between the friction pair movement direction, the greater the chance of adhesive wear and abrasive wear. A complete friction stage pattern can be obtained at a high load (15 N) and a low sliding speed (0.6 mm/s). The friction pair enters a stable wear stage after 20 sliding cycles. Work hardening constitutes the main driver of stable wear. |
| Databáze: | OpenAIRE |
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