Experimental and Numerical Analyses of the Consolidation Process of AA 7075–2 wt.% ZrO2 Powders by Equal Channel Angular Pressing
| Autor: | J.L. Hernández-Rivera, S. E. Hernández-Martínez, C.G. Garay-Reyes, J.J. Cruz-Rivera |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Pressing Materials science Scanning electron microscope Mechanical Engineering Composite number Alloy chemistry.chemical_element 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Chemical reaction chemistry Mechanics of Materials Aluminium Powder metallurgy 0103 physical sciences engineering Relative density General Materials Science Composite material 0210 nano-technology |
| Zdroj: | Journal of Materials Engineering and Performance. 28:154-161 |
| ISSN: | 1544-1024 1059-9495 |
| DOI: | 10.1007/s11665-018-3779-7 |
| Popis: | AA7075 matrix composite was obtained by mechanical alloying using ZrO2 particles as reinforcement. After that, the powders were cold-compacted into an aluminum tube and consolidated by equal channel angular pressing at 220 °C. The temperature influence was analyzed, and it was found by scanning electron microscopy that this route gave the minimum pore percentage. Besides, it was noticeable that the hardness was wide superior in comparison with the AA 7075 aged bulk alloy. In addition, there was no evidence of any chemical reaction between ZrO2 and alloying elements at the temperature employed. On the other hand, it was numerically and experimentally demonstrated that the more strained regions exhibited a higher relative density values. |
| Databáze: | OpenAIRE |
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