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- Title
Investigation of particles on the microstructure, texture and formability of Al–Mg-Si-Zn alloy for automotive body sheet.
- Authors
Chen, Kai-xin; Yan, Li-zhen; Zhang, Yong-an; Li, Xi-wu; Li, Zhi-Hui; Gao, Guan-jun; Xiong, Bai-qing; Liu, Hong-wei
- Abstract
The effects of different size and number distributions of particles after intermediate annealing treatment on the final microstructure, texture and formability of Al–Mg-Si-Zn alloy after solution treatment were systematically investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffractometer (XRD) and tensile testing machine. The results indicated that there were significant differences in grain size and the texture intensity and volume fraction of the CubeND {001} < 310 > texture of three alloy sheets (annealed at different heating and cooling rates) after solution treatment due to the effect of different particle sizes and number distribution on the nucleation and growth of recrystallized grains. As a result, the recrystallized grain nucleation and growth mechanisms of those three alloy sheets were established, and the relationship between microstructure, texture and formability was analyzed. In addition, the distribution of the size and number of particles formed by annealing treatment with rapid heating (heating rate of 70 °C/min) and air cooling was more favorable to the formation of finer recrystallized grains and weaker texture, so that the sheet obtained higher average plastic strain ratio r ¯ values and lower anisotropic index Δr values, which improved the formability.
- Subjects
ALLOY texture; MICROSTRUCTURE; PARTICLE size distribution; DISCONTINUOUS precipitation; TRANSMISSION electron microscopy
- Publication
Journal of Materials Science, 2022, Vol 57, Issue 37, p17779
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-022-07716-5