Knowledge Management System Of Institute of metal research，CAS
| Suppressed negative influence of natural aging in SiCp/6092Al composites | |
| Zhu, S. Z.; Ma, G. N.; Wang, D.; Xiao, B. L.; Ma, Z. Y. | |
| 2019-11-08 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 767 |
| Abstract | For most Al-Mg-Si-(Cu) alloys, precedent natural aging impairs hardening response during artificial aging. This phenomenon is called the negative influence of natural aging. In this study, effects of natural aging as an interlude on the mechanical properties of artificially aged SiCp/6092Al composite and 6092Al alloy were investigated using tension test, electrical conductivity test, differential scanning calorimetry and transmission electron microscopy. It was shown that the strength of both the composite and 6092Al alloy after artificial aging was decreased due to the precedent natural aging. Compared to 6092Al alloy, the composite had smaller strength decrement. However, qualitative analysis based on load transfer indicated that the negative influence of natural aging was stronger in the composite than in 6092Al alloy. Microstructure examinations showed that this conflict was caused by the different influence of natural aging on precipitation behaviors during artificial aging between the composite and 6092Al alloy. Compared to those in 6092Al alloy, not only was the cluster behavior during natural aging weaker, but also more NA clusters could become favorable nucleation sites for beta '' phases in the composite. Therefore, the coarsening of the precipitates caused by precedent natural aging was weaker in the composite than in 6092Al alloy. Furthermore, more metastable phases containing Cu, named L phases, existed in the composite than in 6092Al alloy, which could also be responsible for the suppressed negative influence of natural aging. |
| Keyword | Aluminum matrix composite Al-Mg-Si-Cu alloys Natural aging Artificial aging Precipitates |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000494052200018 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/80638 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | Zhu, S. Z.,Ma, G. N.,Wang, D.,et al. Suppressed negative influence of natural aging in SiCp/6092Al composites[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,767. |
| APA | Zhu, S. Z.,Ma, G. N.,Wang, D.,Xiao, B. L.,&Ma, Z. Y..(2019).Suppressed negative influence of natural aging in SiCp/6092Al composites.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,767. |
| MLA | Zhu, S. Z.,et al."Suppressed negative influence of natural aging in SiCp/6092Al composites".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 767(2019). |
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