Experimental and numerical study of the compressive fatigue behavior of a Ti6Al4V mapped rhombioidal dodecahedral structure fabricated by electron beam melting

doi:10.1016/j.ijfatigue.2023.107912

IMR OpenIR

	Experimental and numerical study of the compressive fatigue behavior of a Ti6Al4V mapped rhombioidal dodecahedral structure fabricated by electron beam melting
	Yu, Boning 1,2,4; Li, Yuming 2; Abbes, Boussad 2; Li, Shujun 3; Yu, Baoyi 1
通讯作者	Yu, Boning(baoyiy@163.com)
	2023-12-01
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	177 页码:17
摘要	Triple-periodicarrayed porous structures are regarded as the most promising materials for the fabrication of medical bone implants. The fatigue properties of cellular structures are critical for their long-term use in dynamic biological skeletal environments. In this study, the rhomboidal dodecahedral cell structure of a Ti6Al4V alloy prepared by electron beam melting with different mapping ratios in one coordinate direction was homogenized. Based on this, the compressive fatigue behavior and fatigue failure mechanism under high cyclic loading were studied. To improve the fatigue performance and reduce the influence of residual stress, the microstructure was post-treated by cryogenization and characterized to analyze the evolution mechanism. The fatigue test results of the entire cell structure showed that failure was asynergy between fatigue damage and the ratchet effect. A change in the mapping ratio significantly affected the homogenization mechanical performance, which resulted in the fatigue properties. Based on the test results and numerical simulations, the cross-sectional elastic properties and local maximum stress of struts with different structural mapping ratios were expressed analytically. The fatigue life of the strut with the maximum local stress in the range of elastic deformation and that of the homogeneous block under the preset loading limit of the system were both modeled with appropriate material constants. The high-cycle fatigue life model was established to assist the fatigue behavior prediction of lattice structures.
关键词	Electron beam melting Titanium alloys Porous material Fatigue behavior Analytical model
DOI	10.1016/j.ijfatigue.2023.107912
收录类别	SCI
语种	英语
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:001071742100001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：3[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/321006/179244
专题	中国科学院金属研究所
通讯作者	Yu, Boning
作者单位	1.Shenyang Univ Technol, Shenyang, Peoples R China 2.Univ Reims, MATIM, Reims, France 3.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China 4.Shenyang Univ Technol, Sch Mat Sci & Engn, 111 Shenliao West Rd, Shenyang 110870, Peoples R China
推荐引用方式 GB/T 7714	Yu, Boning,Li, Yuming,Abbes, Boussad,et al. Experimental and numerical study of the compressive fatigue behavior of a Ti6Al4V mapped rhombioidal dodecahedral structure fabricated by electron beam melting[J]. INTERNATIONAL JOURNAL OF FATIGUE,2023,177:17.
APA	Yu, Boning,Li, Yuming,Abbes, Boussad,Li, Shujun,&Yu, Baoyi.(2023).Experimental and numerical study of the compressive fatigue behavior of a Ti6Al4V mapped rhombioidal dodecahedral structure fabricated by electron beam melting.INTERNATIONAL JOURNAL OF FATIGUE,177,17.
MLA	Yu, Boning,et al."Experimental and numerical study of the compressive fatigue behavior of a Ti6Al4V mapped rhombioidal dodecahedral structure fabricated by electron beam melting".INTERNATIONAL JOURNAL OF FATIGUE 177(2023):17.