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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/1608| INFLUENCE OF SOLUTION TREATMENT TIME, ZN ADDITION AND COLD/HOT ROLLING ON THE MICROSTRUCTURE AND HARDNESS OF THE 2024 ALLOY | |
| IVANOVICH ESTRADA GUEL CARLOS GAMALIEL GARAY REYES EDUARDO CUADROS LUGO | |
| Acceso Abierto | |
| Sin Derechos Reservados | |
| Zn | |
| The effect of Zn addition, solubilized time and thermo-mechanical treatments on the microstructure of the Al-2024 alloy are studied by Vickers microhardness (HV), Rockwell B hardness (HRB), Optic Microscopy (OM), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The addition of Zn to Al-2024 alloy represents some advantages from structural point of view, because Zn and Al have a difference of 7% in their atomic radius, where the main strengthening mechanism is the strengthening by solid solution. Additionally, a second strengthening mechanism could be activated by heat treatment. In the precipitation hardening the solution time is a critical variable to obtain a satisfactory degree of solubilization of alloying elements. This degree of solution has both, a direct relationship with precipitation sequence, and in the final mechanical properties. Finally, others strengthening mechanisms as strengthening by grain size reduction and strain hardening, which have a direct relationship with precipitation sequence and mechanical properties, could be activated by thermomechanical treatments, at intermediate or at final step. From results obtained, is evident that microstructure, precipitation kinetics and hardness of the different alloys are affected by the interaction of the involved strengthening mechanisms as: solution solid, precipitation, strain and grain size reduction. | |
| 2014 | |
| Memoria de congreso | |
| Inglés | |
| OTRAS | |
| Versión revisada | |
| submittedVersion - Versión revisada | |
| Aparece en las colecciones: | Artículos de Congresos |
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