The investigation on the bending fatigue properties of Ti-6Al-4V lattice sandwich structures fabricated EB-PBF

doi:10.1016/j.jmrt.2024.10.023

IMR OpenIR

	The investigation on the bending fatigue properties of Ti-6Al-4V lattice sandwich structures fabricated EB-PBF
	Han, Y.1; Su, S. X.1; Yang, L.2; Li, S. J.2
通讯作者	Li, S. J.(shjli@imr.ac.cn)
	2024-11-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	33 页码:3163-3173
摘要	In this study, lattice sandwich structures of Ti-6Al-4V alloy with simple cubic (SC) and rhombic dodecahedron (RD) unit cells were prepared by electron beam powder bed fusion (EB-PBF) technique. Through a combination of finite element simulation and experimental investigation, the effect of lattice cell shape and heat treatment on the bending fatigue performance of these lattice sandwich structures was studied. The results show that the underlying fatigue mechanism of the RD lattice sandwich structure is primarily dominated by cyclic ratcheting of the lattice. In contrast, for the SC lattice sandwich structure, the fatigue mechanism involves an interaction of cyclic ratcheting and fatigue crack initiation and propagation of the lattice. During the cyclic deformation process, the struts of the lattice unit cells in the SC lattice sandwich structure mainly undergo buckling deformation. Under the same bending deformation strain, the struts experience much higher stress in the SC lattice sandwich structure, making them more susceptible to crack initiation and resulting in a quick fatigue failure. Therefore, the fatigue performance of the RD lattice sandwich structure is significantly superior to that of the SC lattice sandwich structure. Heat treatment result in the enhanced plasticity of parent materials of the lattice sandwich structure, leading to improved resistance to cyclic strain accumulation during fatigue processes and an increase in fatigue strength.
关键词	Ti-6Al-4V Electron beam powder bed fusion Lattice sandwich structures Bending fatigue
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; CAS Interdisciplinary Innovation Team Project of China ; Opening project of National Key Laboratory of Shock Wave and Detonation Physics ; Aeronautical Science Foundation of China
DOI	10.1016/j.jmrt.2024.10.023
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2021YFB3700502] ; National Natural Science Foundation of China[U2241245] ; National Natural Science Foundation of China[52321001] ; CAS Interdisciplinary Innovation Team Project of China[JCTD-2020-10] ; Opening project of National Key Laboratory of Shock Wave and Detonation Physics[2022JCJQLB05702] ; Aeronautical Science Foundation of China[2022Z053092001]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001332079100001
出版者	ELSEVIER
引用统计	被引频次：1[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/321006/190564
专题	中国科学院金属研究所
通讯作者	Li, S. J.
作者单位	1.Shenyang Univ Technol, Sch Elect Engn, Shenyang 110870, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Han, Y.,Su, S. X.,Yang, L.,et al. The investigation on the bending fatigue properties of Ti-6Al-4V lattice sandwich structures fabricated EB-PBF[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,33:3163-3173.
APA	Han, Y.,Su, S. X.,Yang, L.,&Li, S. J..(2024).The investigation on the bending fatigue properties of Ti-6Al-4V lattice sandwich structures fabricated EB-PBF.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,33,3163-3173.
MLA	Han, Y.,et al."The investigation on the bending fatigue properties of Ti-6Al-4V lattice sandwich structures fabricated EB-PBF".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 33(2024):3163-3173.