Wear Dry Behavior of the Al-6061-Al2O3 Composite Synthesized by Mechanical Alloying
| Autor: | J.A. Betancourt-Cantera, Isaías Emmanuel Garduño, Cynthia Daisy Gomez-Esparza, M. Hernández-Hernández, J. C. Díaz-Guillén, R. Pérez-Bustamante, A. Gallegos-Melgar, Hugo Arcos-Gutierrez, V.H. Mercado-Lemus, Jan Mayén-Chaires |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Mining engineering. Metallurgy
Materials science Scanning electron microscope ball-on-disk configuration dry sliding conditions Composite number Alloy TN1-997 Metals and Alloys Oxide chemistry.chemical_element engineering.material Indentation hardness chemistry.chemical_compound chemistry Aluminium aluminum matrix composites engineering General Materials Science Thin film Composite material alumina reinforcement Strengthening mechanisms of materials |
| Zdroj: | Metals, Vol 11, Iss 1652, p 1652 (2021) Metals; Volume 11; Issue 10; Pages: 1652 |
| ISSN: | 2075-4701 |
| Popis: | The present research deals with the comparative wear behavior of a mechanically milled Al-6061 alloy and the same alloy reinforced with 5 wt.% of Al2O3 nanoparticles (Al-6061-Al2O3) under different dry sliding conditions. For this purpose, an aluminum-silicon-based material was synthesized by high-energy mechanical alloying, cold consolidated, and sintered under pressureless and vacuum conditions. The mechanical behavior was evaluated by sliding wear and microhardness tests. The structural characterization was carried out by X-ray diffraction and scanning electron microscopy. Results showed a clear wear resistance improvement in the aluminum matrix composite (Al-6061-Al2O3) in comparison with the Al-6061 alloy since nanoparticles act as a third hard body against wear. This behavior is attributed to the significant increment in hardness on the reinforced material, whose strengthening mechanisms mainly lie in a nanometric size and homogeneous dispersion of particles offering an effective load transfer from the matrix to the reinforcement. Discussion of the wear performance was in terms of a protective thin film oxide formation, where protective behavior decreases as a function of the sliding speed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|