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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 AuthorLi, Runxia(runxiali@163.com)
2021-02-08
Source PublicationADVANCED ENGINEERING MATERIALS
ISSN1438-1656
Pages8
AbstractTo 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.
KeywordAl– Si– Cu– Mg alloy heat treatment mechanical properties microstructure evolution semisolid squeeze casting process
Funding OrganizationNational Natural Science Foundation of China ; Key-Area Research and Development Program of Guangdong Province
DOI10.1002/adem.202001526
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51674168] ; Key-Area Research and Development Program of Guangdong Province[2020B010186002]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000615790600001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/159190
Collection中国科学院金属研究所
Corresponding AuthorLi, Runxia
Affiliation1.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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