Effect of trace Sr+Ce compound modification on microstructure, thermal conductivity and mechanical properties of AlSi10MnMg alloy

doi:10.11817/j.ysxb.1004.0609.2021-40130

	Effect of trace Sr+Ce compound modification on microstructure, thermal conductivity and mechanical properties of AlSi10MnMg alloy
	Liu, Wen-Jing 1; Li, Yuan-Dong 1,2; Song, Zhao-Xi 1; Luo, Xiao-Mei 1; Yang, Hao-Kun 1; Bi, Guang-Li 1,2
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2022-02-28
卷号	32 期号:2 页码:332-342
关键词	Aluminum alloys Cerium alloys Cerium compounds Intermetallics Morphology Rare earths Strontium compounds Tensile strength Thermal conductivity Alsi10mnmg aluminum alloy Ce compounds Compound modifications Eutectic si First principles Intermetallics compounds Mass-fraction Modeling and optimization Sr+ce compound modification Strength increase
ISSN号	1004-0609
DOI	10.11817/j.ysxb.1004.0609.2021-40130
英文摘要	Based on AlSi10MnMg Al-Si alloy, the effects of Sr+Ce compound modification on microstructure, thermal conductivity and mechanical properties of AlSi10MnMg alloy were studied. The results show that the addition of Sr and Ce can effectively improve the morphology and decrease the size and roundness of eutectic Si, and improve the thermal conductivity and mechanical properties of AlSi10MnMg alloy. Compared with the unmodified AlSi10MnMg alloy, the thermal conductivity of the alloy increases by 14.86% to 181.68 W/(m•K), the tensile strength increases by 42.4% to 228.94 MPa, and the elongation increases by 101.5% to 14.62%, the combination of thermal conductivity and mechanical properties is realized. However, when the rare-earth element Ce exceeds 0.04% (mass fraction), the thermal conductivity and Mechanical properties of the alloy decrease. Based on the modeling and optimization of the intermetallic compounds that may appear in the alloy after the composite modification, the first-principles and Cahill model are used to calculate the thermal conductivity. It is found that the Sr-RE intermetallic compounds in the alloy after the Sr+Ce composite modification can reduce the thermal conductivity and mechanical properties of AlSi10MnMg alloy. © 2022, China Science Publishing & Media Ltd. All right reserved.
语种	中文
出版者	Central South University of Technology
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158065]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Non-ferrous Metal Alloys and Processing, Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Liu, Wen-Jing,Li, Yuan-Dong,Song, Zhao-Xi,et al. Effect of trace Sr+Ce compound modification on microstructure, thermal conductivity and mechanical properties of AlSi10MnMg alloy[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2022,32(2):332-342.
APA	Liu, Wen-Jing,Li, Yuan-Dong,Song, Zhao-Xi,Luo, Xiao-Mei,Yang, Hao-Kun,&Bi, Guang-Li.(2022).Effect of trace Sr+Ce compound modification on microstructure, thermal conductivity and mechanical properties of AlSi10MnMg alloy.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,32(2),332-342.
MLA	Liu, Wen-Jing,et al."Effect of trace Sr+Ce compound modification on microstructure, thermal conductivity and mechanical properties of AlSi10MnMg alloy".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 32.2(2022):332-342.