Simultaneously improving elastic modulus and damping capacity of extruded Mg-Gd-Y-Zn-Mn alloy via alloying with Si

doi:10.1016/j.jallcom.2019.151857

IMR OpenIR

	Simultaneously improving elastic modulus and damping capacity of extruded Mg-Gd-Y-Zn-Mn alloy via alloying with Si
	Zhao, Di 1; Chen, Xianhua 1,2; Ye, Junliu 1; Chen, Tao 1; Dai, Yan 1; Liu, Chunquan 1; Luo, Zhu 1; Gao, Shiqing 1; Zhang, Jie 3; Yao, Jiahao 3; Atrens, Andrej 4; Tang, Aitao 1; Pan, Fusheng 1,2
通讯作者	Chen, Xianhua(xlichen@cqu.edu.cn)
	2019-11-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	810 页码:10
摘要	Developing 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.
关键词	Extruded Mg-Gd-Y-Zn-Mn-Si alloy Elastic modulus Damping capacity Si alloying
资助者	National Key R&D Program of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.jallcom.2019.151857
收录类别	SCI
语种	英语
资助项目	National 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研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000486596000036
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：45[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/135492
专题	中国科学院金属研究所
通讯作者	Chen, Xianhua
作者单位	1.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
推荐引用方式 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.