Fatigue crack growth behavior in additive manufactured Ti6Al4V alloy with intentionally embedded spherical defect

doi:10.1016/j.msea.2023.145612

IMR OpenIR

	Fatigue crack growth behavior in additive manufactured Ti6Al4V alloy with intentionally embedded spherical defect
	Ben, D. D.1,2; Yang, H. J.2; Ji, H. B.1; Lian, D. L.1; Meng, L. X.1; Chen, J.3; Yi, J. L.3; Wang, L.3; De Hosson, J. ThM.4; Yang, R.1; Zhang, Z. F.1
通讯作者	Yang, H. J.(yanghj@szlab.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2023-10-03
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	885 页码:10
摘要	The present study aims at elucidating the impact of unavoidable defects in selective laser melting (SLM) additive manufactured alloys on fatigue performances. The novel idea is to reveal the relationship between the printing defect and fatigue crack growth, by intentionally embedding a 500 & mu;m spherical defect in an SLM-Ti6Al4V alloy exerted to low-cycle fatigue (LCF). The results show that the cyclic softening of the specimen was not affected by the embedded defect and surprisingly its fatigue life was nearly the same as the virgin specimens free of embedded defects at low strain amplitudes. The performance is attributed to the single crack initiation site and only small change in the stress intensity factor range (& UDelta;K). In contrast, when subjected to higher strain ampli-tudes during LCF, the embedded defect dominates the crack initiation and crack propagation occurs readily. It is shown that the experiments support a model description based on the competitive failure mechanisms between the surface defects and internal defects.
关键词	Defects Low-cycle fatigue Crack growth Selective laser melting Ti6Al4V alloy
资助者	National Natural Science Foundation of China ; COMAC Shanghai Aircraft Manufacturing Co., Ltd ; Liao Ning Revitalization Talents Program
DOI	10.1016/j.msea.2023.145612
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51975552] ; National Natural Science Foundation of China[52130002] ; COMAC Shanghai Aircraft Manufacturing Co., Ltd[COMAC-SFGS-2018-2663] ; Liao Ning Revitalization Talents Program[XLYC1808027]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001070037700001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：8[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/321006/179288
专题	中国科学院金属研究所
通讯作者	Yang, H. J.; Zhang, Z. F.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Suzhou Lab, Suzhou 215028, Peoples R China 3.COMAC Shanghai Aircraft Mfg Co Ltd, Shanghai 201324, Peoples R China 4.Univ Groningen, Zernike Inst Adv Mat, Dept Appl Phys, NL-9747 AG Groningen, Netherlands
推荐引用方式 GB/T 7714	Ben, D. D.,Yang, H. J.,Ji, H. B.,et al. Fatigue crack growth behavior in additive manufactured Ti6Al4V alloy with intentionally embedded spherical defect[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,885:10.
APA	Ben, D. D..,Yang, H. J..,Ji, H. B..,Lian, D. L..,Meng, L. X..,...&Zhang, Z. F..(2023).Fatigue crack growth behavior in additive manufactured Ti6Al4V alloy with intentionally embedded spherical defect.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,885,10.
MLA	Ben, D. D.,et al."Fatigue crack growth behavior in additive manufactured Ti6Al4V alloy with intentionally embedded spherical defect".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 885(2023):10.