Compressive behavior of Mg alloy foams at elevated temperature

doi:10.1016/j.jallcom.2019.04.323

CORC > 金属研究所 > 中国科学院金属研究所

	Compressive behavior of Mg alloy foams at elevated temperature
	Lu, Xiaotong 1; Zhang, Zhigang 1; Du, Hao 2; Luo, Hongjie 1,3; Mu, Yongliang 1; Xu, Jianrong 1
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2019-08-15
卷号	797 页码:727-734
关键词	Mg alloy foams Temperature Compressive behavior Densification strain
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2019.04.323
通讯作者	Luo, Hongjie(Luohj@smm.neu.edu.cn)
英文摘要	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.
资助项目	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研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000471128700084
资助机构	National Natural Science Foundation of China ; Science and Technology Department of Liaoning Province of China ; fundamental research funds for the central universities, China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/133885]
专题	金属研究所_中国科学院金属研究所
通讯作者	Luo, Hongjie
作者单位	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
推荐引用方式 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.