Damping Capacities of Porous Mg-based Ternary Alloys Prepared by a Stir-casting Method

doi:10.1002/slct.201800159

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	Damping Capacities of Porous Mg-based Ternary Alloys Prepared by a Stir-casting Method
	Wang, Yun-si; Niu, Rui-long; Yan, Fang-jia; Duan, Dong-ping; Yang, Xue-min
第一作者	Wang, Yun-si
	2018-06-15
发表期刊	CHEMISTRYSELECT
ISSN	2365-6549
卷号	3 期号:22 页码:6073-6080
关键词	Damping Capacities Porous Mg-based Alloys Mg-al-sr Ternary Alloys Stir-casting
摘要	A new approach for preparing porous Mg-Al-Sr ternary alloys has been proposed using stir-casting method. Experimental results indicate that porosity and pore diameters have close relation with chemical composition of Mg-based ternary alloys. The proposed formation mechanism of pores in Mg-based ternary alloys can be described as that the oxidization reaction between [Sr] and O-2 in air provides enough heat source to vaporize small amount of Mg-based ternary alloys, while the vaporized products promote formation of embodied pores with various sizes and shapes in Mg-based ternary alloys during solidification process. Meanwhile, some oxides in shape of sheets will be formed and precipitated, while other oxides will also be precipitated on surface of pore wall during cooling. Moreover, the measured damping capacities expressed by internal friction tan indicate that changing temperature from ambient temperature to 343K cannot cause a large effect on damping capacities, however the inverse V-shape plots of damping capacities against temperature from 343 to 573K are obtained. In addition, increasing vibration frequencies can result in a decrease of internal friction tan. The optimized chemical composition as 50%Mg-47%Al-3%Sr and 50%Mg-45%Al-5%Sr are recommended for Mg-based ternary alloys with greater porosity and higher damping performance under temperature and vibration frequency.
DOI	10.1002/slct.201800159
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6701
专题	中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	Wang, Yun-si,Niu, Rui-long,Yan, Fang-jia,et al. Damping Capacities of Porous Mg-based Ternary Alloys Prepared by a Stir-casting Method[J]. CHEMISTRYSELECT,2018,3(22):6073-6080.
APA	Wang, Yun-si,Niu, Rui-long,Yan, Fang-jia,Duan, Dong-ping,&Yang, Xue-min.(2018).Damping Capacities of Porous Mg-based Ternary Alloys Prepared by a Stir-casting Method.CHEMISTRYSELECT,3(22),6073-6080.
MLA	Wang, Yun-si,et al."Damping Capacities of Porous Mg-based Ternary Alloys Prepared by a Stir-casting Method".CHEMISTRYSELECT 3.22(2018):6073-6080.

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