Hot deformation behavior and microstructure evolution of Al-6.4Zn-2.2Cu–2Mg alloy
Artykuł w czasopiśmie
MNiSW
100
Lista 2024
| Status: | |
| Autorzy: | Chen Yusen, Shu Xuedao, Yan Shuyang, Luo Chenglong, Xia Yingxiang, Xu Haijie, Li Zixuan, Pater Zbigniew, Bulzak Tomasz |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2026 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 41 |
| Strony: | 5921 - 5934 |
| Impact Factor: | 6,6 |
| Efekt badań statutowych | NIE |
| Finansowanie: | This study was funded by the National Natural Science Foundation of China (No. U23A20629 and No. 52375346), Supported by the Graduate Student Scientific Research and Innovation Project of Ningbo University. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Otwarte czasopismo |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Data opublikowania w OA: | 24 lutego 2026 |
| Abstrakty: | angielski |
| To achieve the cross-rolling composite forming of aluminum alloy hollow shafts, hot compression tests were conducted on extruded Al-6.4Zn-2.2Cu–2Mg alloys using a Gleeble-3500 thermal-mechanical simulator. The deformation temperatures ranged from 320 to 440 °C, with strain rates spanning 0.01 to 10 s-1. Based on the experimental data, a 3D predictive model for constitutive parameters was established, incorporating both temperature and strain rate. Analysis of conventional strain-compensated models revealed inherent limitations; in contrast, the proposed modified Arrhenius constitutive model demonstrated superior predictive accuracy. Furthermore, hot processing maps were constructed to identify instability domains, which were primarily concentrated in high strain rate regions. The optimal hot deformation window was determined to be 660-710 K with a strain rate of 0.01-0.1 s-1. Electron backscatter diffraction (EBSD) analysis indicated that the alloy's hot deformation follows an evolutionary path of dislocation accumulation, subgrain rotation, and recrystallization. Continuous dynamic recrystallization (CDRX) was identified as the dominant mechanism, accompanied by localized discontinuous dynamic recrystallization (DDRX). High temperatures and low strain rates were found to facilitate CDRX. These findings provide a theoretical foundation for the cross-piercing rolling of Al-6.4Zn-2.2Cu–2Mg alloy hollow shafts. |
