| Compressive behavior of Mg alloy foams at elevated temperature | |
| Lu, Xiaotong1; Zhang, Zhigang1; Du, Hao2; Luo, Hongjie1,3; Mu, Yongliang1; Xu, Jianrong1 | |
| Corresponding Author | Luo, Hongjie(Luohj@smm.neu.edu.cn) |
| 2019-08-15 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 797Pages:727-734 |
| Abstract | It is the purpose of this work to investigate compressive behavior of closed-cell Mg alloy foams fabricated by melting method at elevated temperature. First, the Mg alloy foams were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) for microstructure, composition and phases, respectively. Then, the compressive tests were carried out on closed-cell Mg alloy foams at room temperature (25 degrees C), 200 degrees C, 400 degrees C and 500 degrees C. It is found that the effect of temperature on compressive behavior of the Mg alloy foams is different between high temperature and low temperature. The Mg alloy foams exhibit a brittle compressive behavior at room temperature by the fracture of cell walls. However, the pure brittle fracture mode transforms into a combination of brittle fracture mode and ductile fracture mode at temperature in the range of 200 degrees C-400 degrees C. This indicates a soften effect of high temperature on the foams matrix and the plasticity of the cell walls at low temperature. It is concluded that the compressive strength and energy absorption capacity of the closed-cell Mg alloy foams decrease with the increasing temperature. Furthermore, a new method of defining the densification strain is proposed based on the perspective of energy absorption efficiency. (C) 2019 Elsevier B.V. All rights reserved. |
| Keyword | Mg alloy foams Temperature Compressive behavior Densification strain |
| Funding Organization | National Natural Science Foundation of China ; Science and Technology Department of Liaoning Province of China ; fundamental research funds for the central universities, China |
| DOI | 10.1016/j.jallcom.2019.04.323 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51874093] ; National Natural Science Foundation of China[51174060] ; National Natural Science Foundation of China[51661031] ; Science and Technology Department of Liaoning Province of China[2013223004] ; fundamental research funds for the central universities, China[N182504015] ; fundamental research funds for the central universities, China[N140203004] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000471128700084 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/133886 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Luo, Hongjie |
| Affiliation | 1.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110015, Liaoning, Peoples R China 3.Minist Educ Mat Adv Preparat, Engn Technol Res Ctr, Shenyang 110819, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Lu, Xiaotong,Zhang, Zhigang,Du, Hao,et al. Compressive behavior of Mg alloy foams at elevated temperature[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,797:727-734. |
| APA | Lu, Xiaotong,Zhang, Zhigang,Du, Hao,Luo, Hongjie,Mu, Yongliang,&Xu, Jianrong.(2019).Compressive behavior of Mg alloy foams at elevated temperature.JOURNAL OF ALLOYS AND COMPOUNDS,797,727-734. |
| MLA | Lu, Xiaotong,et al."Compressive behavior of Mg alloy foams at elevated temperature".JOURNAL OF ALLOYS AND COMPOUNDS 797(2019):727-734. |
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