Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment

doi:10.1002/adem.202001526

IMR OpenIR

	Adjusting the Si Phase and Forming Nanoprecipitation to Improve the Mechanical Properties of Al-Si-Cu-Mg Alloy by Heat Treatment
	Hao, Jianfei 1; Yu, Baoyi 1; Bian, Jiancong 1; Liu, Jinmin 3; Sun, Wanting 2; Shi, Yuanji 1; Li, Runxia 2
通讯作者	Li, Runxia(runxiali@163.com)
	2021-02-08
发表期刊	ADVANCED ENGINEERING MATERIALS
ISSN	1438-1656
页码	8
摘要	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.
关键词	Al– Si– Cu– Mg alloy heat treatment mechanical properties microstructure evolution semisolid squeeze casting process
资助者	National Natural Science Foundation of China ; Key-Area Research and Development Program of Guangdong Province
DOI	10.1002/adem.202001526
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51674168] ; Key-Area Research and Development Program of Guangdong Province[2020B010186002]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000615790600001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/159190
专题	中国科学院金属研究所
通讯作者	Li, Runxia
作者单位	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
推荐引用方式 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.