Artificial Aging Effect On Precipitation And Age-hardening In An Al-zn-mg-cu Alloy
| dc.contributor.author | Boumaza, Leila | |
| dc.contributor.author | Hadjadj, Lakhdar | |
| dc.contributor.author | Belamri, Zahira | |
| dc.contributor.author | Azizi, Assia | |
| dc.contributor.author | Benmelit, Rabia | |
| dc.contributor.author | Hamana, Djamel | |
| dc.date.accessioned | 2023-09-07T06:04:22Z | |
| dc.date.available | 2023-09-07T06:04:22Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | In the present work, the influence of heat treatment on the mechanical properties and precipitation of the different phases in Al-Zn-Mg-Cu alloy was studied. The precipitation sequence and the mechanism of structural hardening have been followed using the differential scanning calorimetry (DSC), the microhardness measurements, the X-ray diffraction (XRD) and the scanning electron microscopy (SEM). Five calorimetric effects have been recorded and correspond to the different phases precipitating in this system of alloys and which are: the GPI zones and / or VRC (or GPII), the intermediate η' phase and the equilibrium η phase with a suspicion concerning the existence of T and S phases. Microhardness measurements of the aged state at 226 °C confirm the existence of two types of phases: the metastable η’ phase and the equilibrium η phase (MgZn2). The appearance of the first precipitates was followed by SEM. The fine precipitates become larger (holdings at 243 and 266 °C) and the equilibrium η phase continues to grow inside and on the grain boundaries to become a large spherical and/or lamellar precipitate. The X-ray diffraction confirmed that only the equilibrium η phase was observed in this type of alloy. | ar |
| dc.identifier.issn | 2170-161X | |
| dc.identifier.issn | 2588-2082 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/15191 | |
| dc.language.iso | en | ar |
| dc.publisher | Oum-El-Bouaghi University | ar |
| dc.subject | Al-Zn-Mg-Cu | ar |
| dc.subject | Mechanical properties | ar |
| dc.subject | Heat treatments | ar |
| dc.subject | DSC ; XRD ; and SEM | ar |
| dc.title | Artificial Aging Effect On Precipitation And Age-hardening In An Al-zn-mg-cu Alloy | ar |
| dc.type | Article | ar |