Effects of Al–Ti–C–Ce Master Alloy on Microstructure and Mechanical Properties of Hypoeutectic Al–7%Si Alloy

doi:10.1007/s40962-018-0266-8

	Effects of Al–Ti–C–Ce Master Alloy on Microstructure and Mechanical Properties of Hypoeutectic Al–7%Si Alloy
	Ding, Wanwu 1,2; Zhao, Xiaoyan 1,2; Zhao, Wenjun 1,2; Guo, Tingbiao 1,2; Tang, Xinchang 1,2; Qiao, Jisen 1,2; Xia, Tiandong 1,2
刊名	International Journal of Metalcasting
	2019-04-15
卷号	13 期号:2 页码:426-437
关键词	Aluminum alloys Binary alloys Eutectics Mechanical properties Microstructural evolution Microstructure Morphology Silicon alloys Tensile strength Ternary alloys Textures Titanium alloys Titanium carbide Equi-axed grains Master alloys Microstructure and mechanical properties Molten aluminum Secondary dendritic arm spacing Si alloys Thermal explosion reaction Ultimate tensile strength
ISSN号	19395981
DOI	10.1007/s40962-018-0266-8
英文摘要	It is well known that the mechanical properties of hypoeutectic Al–7%Si alloys are influenced by the size, morphology, and distribution of primary α-Al and eutectic Si crystals. In the present work, a novel Al–Ti–C–Ce master alloy was prepared by the pure molten aluminum thermal explosion reaction, and its effects on the microstructure and mechanical properties of hypoeutectic Al–7%Si alloy were investigated. The results show that the Al–Ti–C–Ce master alloy containing α-Al, granular TiC, lump-like TiAl3, and block-like Ti2Al20Ce has excellent refining and modification properties for hypoeutectic Al–7%Si alloy. When 1.5 wt.% Al–Ti–C–Ce master alloy is added, the coarse dendritic α-Al in hypoeutectic Al–7%Si alloy is refined into equiaxed grains. The secondary dendritic arm spacing (SDAS) was also reduced, and the coarse needle-flake eutectic Si phase was transformed into a fibrous and granular phase. It was found that the ultimate tensile strength and elongation increased by 59% and 56%, respectively, due to the decrease in the SDAS of primary α-Al dendrites and the modification of eutectic Si crystals. Moreover, the change of mechanical properties corresponds to the evolution of microstructure. © 2018, American Foundry Society.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	Springer International Publishing
WOS记录号	WOS:000463755600019
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114248]
专题	材料科学与工程学院兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou; Gansu, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; Gansu, China
推荐引用方式 GB/T 7714	Ding, Wanwu,Zhao, Xiaoyan,Zhao, Wenjun,et al. Effects of Al–Ti–C–Ce Master Alloy on Microstructure and Mechanical Properties of Hypoeutectic Al–7%Si Alloy[J]. International Journal of Metalcasting,2019,13(2):426-437.
APA	Ding, Wanwu.,Zhao, Xiaoyan.,Zhao, Wenjun.,Guo, Tingbiao.,Tang, Xinchang.,...&Xia, Tiandong.(2019).Effects of Al–Ti–C–Ce Master Alloy on Microstructure and Mechanical Properties of Hypoeutectic Al–7%Si Alloy.International Journal of Metalcasting,13(2),426-437.
MLA	Ding, Wanwu,et al."Effects of Al–Ti–C–Ce Master Alloy on Microstructure and Mechanical Properties of Hypoeutectic Al–7%Si Alloy".International Journal of Metalcasting 13.2(2019):426-437.