Very-high-cycle fatigue behavior of Ti-6Al-4V manufactured by selective laser melting: Effect of build orientation

doi:10.1016/j.ijfatigue.2020.105628

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	Very-high-cycle fatigue behavior of Ti-6Al-4V manufactured by selective laser melting: Effect of build orientation
	Qian GA(钱桂安)2,3; Li YF(李彦峰)2,3; Paolino DS 1; Tridello A 1; Berto F 4; Hong YS(洪友士)2,3
刊名	INTERNATIONAL JOURNAL OF FATIGUE
	2020-07-01
卷号	136 页码:13
关键词	High-cycle fatigue (HCF) Very-high-cycle fatigue (VHCF) Selective laser melting (SLM) Titanium alloy Building direction Fatigue design
ISSN号	0142-1123
DOI	10.1016/j.ijfatigue.2020.105628
通讯作者	Hong, Youshi(hongys@imech.ac.cn)
英文摘要	The effect of building orientation on the very-high-cycle fatigue (VHCF) response of Ti-6Al-4V specimens produced through selective laser melting (SLM) process with three different building orientations (0 degrees, 45 degrees and 90 degrees) has been experimentally assessed. The fatigue performance decreases with different building orientations from 0 degrees to 90 degrees. The fatigue crack origin has been found to be always an internal defect both at high-cycle fatigue and VHCF regime independent of building orientations. Size of defects induced fatigue failures and the stress intensity factor range decrease with the number of cycles to failure. By considering the VHCF strength at 109 cycles, the median value decreases from 217 MPa (0 degrees) to 201 MPa (45 degrees) and finally to 155 MPa (90 degrees), with a 40% reduction from 0 degrees to 90 degrees. The building orientation significantly influences both the defect size and the resulting VHCF response.
分类号	一类
资助项目	National Natural Science Foundation of China[11872364] ; National Natural Science Foundation of China[11932020] ; CAS Pioneer Hundred Talents Program
WOS关键词	CRACK INITIATION ; SURFACE-ROUGHNESS ; LIFE PREDICTION ; CRITICAL PLANE ; EARLY GROWTH ; STRENGTH ; MICROSTRUCTURE ; MECHANISM ; CURVES ; REGIME
WOS研究方向	Engineering ; Materials Science
语种	英语
WOS记录号	WOS:000531534700046
资助机构	National Natural Science Foundation of China ; CAS Pioneer Hundred Talents Program
其他责任者	Hong, Youshi
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/82110]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Politecn Torino, Dept Mech & Aerosp Engn, Turin 10129, Italy; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China; 4.Norwegian Univ Sci & Technol NTNU, Dept Mech & Ind Engn, Richard Birkelands Vei 2b, Trondheim 7491, Norway
推荐引用方式 GB/T 7714	Qian GA,Li YF,Paolino DS,et al. Very-high-cycle fatigue behavior of Ti-6Al-4V manufactured by selective laser melting: Effect of build orientation[J]. INTERNATIONAL JOURNAL OF FATIGUE,2020,136:13.
APA	钱桂安,李彦峰,Paolino DS,Tridello A,Berto F,&洪友士.(2020).Very-high-cycle fatigue behavior of Ti-6Al-4V manufactured by selective laser melting: Effect of build orientation.INTERNATIONAL JOURNAL OF FATIGUE,136,13.
MLA	钱桂安,et al."Very-high-cycle fatigue behavior of Ti-6Al-4V manufactured by selective laser melting: Effect of build orientation".INTERNATIONAL JOURNAL OF FATIGUE 136(2020):13.