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Damping Capacities of Porous Mg-based Ternary Alloys Prepared by a Stir-casting Method
Wang, Yun-si1,2,4; Niu, Rui-long3,4; Yan, Fang-jia3,4; Duan, Dong-ping1,2,3; Yang, Xue-min3
2018-06-15
发表期刊CHEMISTRYSELECT
卷号3期号:22页码:6073-6080
文章类型Article
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.
关键词Damping Capacities Porous Mg-based Alloys Mg-al-sr Ternary Alloys Stir-casting
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]MECHANICAL-PROPERTIES ; INTERNAL-FRICTION ; MAGNESIUM ; FOAMS ; MICROSTRUCTURE ; PROPERTY ; POROSITY ; METALS
收录类别SCI
语种英语
WOS研究方向Chemistry
WOS类目Chemistry, Multidisciplinary
WOS记录号WOS:000435260800007
出版者WILEY-V C H VERLAG GMBH
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
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
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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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