This study examined the behavior of AA2024 aluminum alloys, which received different heat treatments, i.e., homogenization, quenching, artificial aging, and recrystallization. The homogenization temperature is set at 495 °C for 5 hours followed by slow cooling in furnace. Then a quenching treatment was done with cold water. Artificially aged alloys were heated to hours, rapid water cooling, the...

By combining differential scanning calorimetry analysis and high-resolution transmission electron microscopy observations, the precipitation map for Al–Cu–Mg alloy (AA2024-T3) is obtained a wide temperature range from 85 to 250 °C ageing durations 1 10,000 h. For first time, appearance of equilibrium S–Al2CuMg phase observed at 1000 h ageing. Hardness values superposed with reveal that maximum ...

This work characterises crack growth in AA2024-T315 by combining different methods to further increase the reliability of results. The Christopher-James-Patterson (CJP) model was fitted experimental data obtained digital image correlation (DIC). effective value CJP stress intensity factors were successfully correlated with ?K-da/dN curve as Scanning Electron Microscopy measurements depth striat...

The 3rd generation of aluminum–lithium (Al–Li) alloys provides a desirable combination high mechanical properties and low density compared to their traditional counterparts, exempt lithium. Therefore, providing reliable joint between new conventional aluminum is crucial for making hybrid structures. present study focuses on improving the dissimilar AA2198/AA2024 joints using different heat trea...