| Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment | |
| Hao, Jianfei1; Yu, Baoyi1; Bian, Jiancong1; Liu, Jinmin3; Sun, Wanting2; Shi, Yuanji1; Li, Runxia2 | |
| Corresponding Author | Li, Runxia(runxiali@163.com) |
| 2021-02-08 | |
| Source Publication | ADVANCED ENGINEERING MATERIALS
 |
| ISSN | 1438-1656 |
| Pages | 8 |
| Abstract | To adjust the morphology of the Si phase and improve the mechanical properties of Al-Si-Cu-Mg alloy formed by semisolid squeeze casting, the effects of solution time on microstructure evolution and mechanical properties are systematically studied. Results show that spheroidization occurs in the Si phase, and the content of Cu in the matrix increases simultaneously after solution treatment at 525 degrees C for 1 h. As solution time increases to 8 h, the content of Cu in the matrix increases from 1.15% to 1.41% and the dislocation density decreases. After an aging treatment at 180 degrees C for 12 h, the beta ', theta ', and Q ' phases precipitate. After heat treatment, the alloy strength value shows a "double peak" phenomenon. After a 1 h solution treatment, the tensile strength of the alloy reaches the first peak, which is mainly ascribed to the large dislocation density induced by the semisolid squeeze casting process. When the solution time is 8 h, the tensile strength of the alloy is 323 MPa and the tensile strength reaches the second peak, which is ascribed to the rounding of the Si phase and the strengthening effects of fine precipitates. |
| Keyword | Al– Si– Cu– Mg alloy heat treatment mechanical properties microstructure evolution semisolid squeeze casting process |
| Funding Organization | National Natural Science Foundation of China ; Key-Area Research and Development Program of Guangdong Province |
| DOI | 10.1002/adem.202001526 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51674168] ; Key-Area Research and Development Program of Guangdong Province[2020B010186002] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000615790600001 |
| Publisher | WILEY-V C H VERLAG GMBH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/159190 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, Runxia |
| Affiliation | 1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 2.Dongguan Univ Technol, Sch Mat Sci & Engn, Dongguan 523808, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Hao, Jianfei,Yu, Baoyi,Bian, Jiancong,et al. Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment[J]. ADVANCED ENGINEERING MATERIALS,2021:8. |
| APA | Hao, Jianfei.,Yu, Baoyi.,Bian, Jiancong.,Liu, Jinmin.,Sun, Wanting.,...&Li, Runxia.(2021).Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment.ADVANCED ENGINEERING MATERIALS,8. |
| MLA | Hao, Jianfei,et al."Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment".ADVANCED ENGINEERING MATERIALS (2021):8. |
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