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

doi:10.1002/slct.201800159

	Damping Capacities of Porous Mg-based Ternary Alloys Prepared by a Stir-casting Method
	Wang, Yun-si 1,2,4; Niu, Rui-long 3,4; Yan, Fang-jia 3,4; Duan, Dong-ping 1,2,3; Yang, Xue-min 3
刊名	CHEMISTRYSELECT
	2018-06-15
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
ISSN号	2365-6549
DOI	10.1002/slct.201800159
英文摘要	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.
资助项目	Qinghai Science and Technology Department[2013-Z-704]
WOS关键词	MECHANICAL-PROPERTIES ; INTERNAL-FRICTION ; MAGNESIUM ; FOAMS ; MICROSTRUCTURE ; PROPERTY ; POROSITY ; METALS
WOS研究方向	Chemistry
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000435260800007
资助机构	Qinghai Science and Technology Department
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/25782]
专题	中国科学院过程工程研究所
通讯作者	Duan, Dong-ping; Yang, Xue-min
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China 2.Qinghai Engn & Technol Res Ctr Comprehens Utiliza, Xining, Qinghai, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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.