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Simultaneously improving elastic modulus and damping capacity of extruded Mg-Gd-Y-Zn-Mn alloy via alloying with Si
Zhao, Di1; Chen, Xianhua1,2; Ye, Junliu1; Chen, Tao1; Dai, Yan1; Liu, Chunquan1; Luo, Zhu1; Gao, Shiqing1; Zhang, Jie3; Yao, Jiahao3; Atrens, Andrej4; Tang, Aitao1; Pan, Fusheng1,2
Corresponding AuthorChen, Xianhua(xlichen@cqu.edu.cn)
2019-11-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume810Pages:10
AbstractDeveloping magnesium (Mg) alloys with both high elastic modulus and damping capacity is a long-term challenge in the field of lightweight metals. Herein, it is shown that alloying with Si in Mg-Gd-Y-Zn-Mn simultaneously increased the elastic modulus and damping capacity. After Si alloying, the LPSO phase was greatly reduced and a large number of (RE + Si)-rich particles were formed. Due to the contribution of the high modulus second phases, the elastic modulus of the extruded Mg-Gd-Y-Zn-Mn alloy with a trace amount of Si was 49.3 GPa, 8 GPa greater than that of the extruded pure Mg. In addition, the extruded Mg-Gd-Y-Zn-Mn-Si alloy possessed good damping capacity at both room temperature (RT) and high temperature. At high strain amplitude, the extruded Mg-Gd-Y-Zn-Mn-Si alloy achieved a RT damping value of Q(-1) > 0.01, significantly higher than the extruded pure Mg, which was related to the high density of thermal mismatch dislocations in the vicinity of the interfaces between the reinforcing phase and the alpha-Mg matrix. With the increasing temperature, the extruded Mg-Gd-Y-Zn-Mn-Si alloy showed obviously higher damping capacity than the extruded Si-free alloy, which was attributed to the incoherent phase interfaces, weakened texture and thermal mismatch dislocations. (C) 2019 Elsevier B.V. All rights reserved.
KeywordExtruded Mg-Gd-Y-Zn-Mn-Si alloy Elastic modulus Damping capacity Si alloying
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
DOI10.1016/j.jallcom.2019.151857
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2016YFB0301100] ; National Natural Science Foundation of China[51571043] ; Fundamental Research Funds for the Central Universities[2018CDJDCL0019] ; Fundamental Research Funds for the Central Universities[cqu2018CDHB1A08] ; Fundamental Research Funds for the Central Universities[2018CDGFCL0005]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000486596000036
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/135492
Collection中国科学院金属研究所
Corresponding AuthorChen, Xianhua
Affiliation1.Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400045, Peoples R China
2.Chongqing Acad Sci & Technol, Chongqing 401123, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
4.Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
Recommended Citation
GB/T 7714
Zhao, Di,Chen, Xianhua,Ye, Junliu,et al. Simultaneously improving elastic modulus and damping capacity of extruded Mg-Gd-Y-Zn-Mn alloy via alloying with Si[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,810:10.
APA Zhao, Di.,Chen, Xianhua.,Ye, Junliu.,Chen, Tao.,Dai, Yan.,...&Pan, Fusheng.(2019).Simultaneously improving elastic modulus and damping capacity of extruded Mg-Gd-Y-Zn-Mn alloy via alloying with Si.JOURNAL OF ALLOYS AND COMPOUNDS,810,10.
MLA Zhao, Di,et al."Simultaneously improving elastic modulus and damping capacity of extruded Mg-Gd-Y-Zn-Mn alloy via alloying with Si".JOURNAL OF ALLOYS AND COMPOUNDS 810(2019):10.
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