| 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 Author | Chen, Xianhua(xlichen@cqu.edu.cn) |
| 2019-11-25 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 810Pages:10 |
| Abstract | 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. |
| Keyword | Extruded Mg-Gd-Y-Zn-Mn-Si alloy Elastic modulus Damping capacity Si alloying |
| Funding Organization | 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 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000486596000036 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/135496 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Chen, Xianhua |
| Affiliation | 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 |
| 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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