Compressive and fatigue behavior of functionally graded Ti-6Al-4V meshes fabricated by electron beam melting

doi:10.1016/j.actamat.2018.02.060

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	Compressive and fatigue behavior of functionally graded Ti-6Al-4V meshes fabricated by electron beam melting
	Zhao, S ; Li, SJ ; Wang, SG ; Hou, WT ; Li, Y ; Zhang, LC ; Hao, YL ; Yang, R ; Misra, RDK ; Murr, LE
刊名	ACTA MATERIALIA
	2018-05-15
卷号	150 页码:1-15
关键词	Metallic cellular materials Functionally graded High fatigue strength High energy absorption Static and cyclic deformation
ISSN号	1359-6454
DOI	10.1016/j.actamat.2018.02.060
英文摘要	In recent years, cellular metallic materials have attracted significant interest for biomedical applications. However, mutually opposing requirements of porous architecture and mechanical strength in conjunction with the high energy absorption capability have restricted their use. Here, we illustrate that electron beam melting can fabricate functionally graded Ti-6Al-4V alloy interconnected mesh structures with a combination of low density (0.5-2 g/cm(3)), high fatigue strength (similar to 70 MPa) and energy absorption (similar to 50 MJ/mg), which is superior to the ordinary uniform cellular structures. The underlying fundamental mechanisms governing the compressive and fatigue behavior of the graded cellular structures are elucidated via in situ tomography experiments and digital volume correlation analyses. It is underscored that during cyclic deformation, the stress can be continuously redistributed because of inhomogeneous mechanical properties and crack formation in constituent meshes, thereby resulting in variation of cyclic ratcheting rate for the graded cellular structures. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000433272400001
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80184]
专题	金属研究所_中国科学院金属研究所
作者单位	1.[Zhao, S. 2.Li, S. J. 3.Wang, S. G. 4.Hou, W. T. 5.Li, Y. 6.Hao, Y. L. 7.Yang, R.] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 8.[Zhang, L. C.] Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Perth, WA 6027, Australia 9.[Misra, R. D. K. 10.Murr, L. E.] Univ Texas El Paso, Dept Met Mat & Biomed Engn, El Paso, DC 79968 USA
推荐引用方式 GB/T 7714	Zhao, S,Li, SJ,Wang, SG,et al. Compressive and fatigue behavior of functionally graded Ti-6Al-4V meshes fabricated by electron beam melting[J]. ACTA MATERIALIA,2018,150:1-15.
APA	Zhao, S.,Li, SJ.,Wang, SG.,Hou, WT.,Li, Y.,...&Murr, LE.(2018).Compressive and fatigue behavior of functionally graded Ti-6Al-4V meshes fabricated by electron beam melting.ACTA MATERIALIA,150,1-15.
MLA	Zhao, S,et al."Compressive and fatigue behavior of functionally graded Ti-6Al-4V meshes fabricated by electron beam melting".ACTA MATERIALIA 150(2018):1-15.