In-situ investigation on fatigue behaviors of Ti-6Al-4V manufactured by selective laser melting

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	In-situ investigation on fatigue behaviors of Ti-6Al-4V manufactured by selective laser melting
	Qian GA(钱桂安); Jian,Zhimo; Pan XN(潘向南); Berto,Filippo
会议录名称	INTERNATIONAL JOURNAL OF FATIGUE
	2020
页码	105424
会议名称	19th International Colloquium on Mechanical Fatigue of Metals (ICMFM)
会议日期	SEP 05-07, 2018
会议地点	Univ Porto, Fac Engn, Porto, PORTUGAL
摘要	In-situ fatigue tests were conducted for exploring the fatigue crack propagation process for Ti-6Al-4V manufactured by selective laser melting (SLM). Fatigue specimens were prepared with two printing orientations by SLM and characterized by scanning electron microscopy (SEM). In-situ fatigue experiments were carried out at 25 degrees C, 200 degrees C, 400 degrees C and 600 degrees C, respectively. Results show that vertically printed specimens have more and larger defects than horizontally printed ones. The fatigue property of horizontally printed specimens is better than that of vertically printed specimens. The anisotropy caused by printing orientation is the reason for the difference in fatigue property. Crack propagation rate increases with temperature. A large number of secondary cracks occurred during the crack propagation at elevated temperature. The branching of secondary cracks releases the energy at the crack tip, and thus slows down the crack growth.
关键词	Selective laser melting In-situ SEM Ti-6Al-4V Low cycle fatigue Crack propagation
WOS记录号	WOS:000510947500024
资助信息	National Natural Science Foundation of China [11872364, 11932020]; CAS Pioneer Hundred Talents Program
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收录类别	CPCI-S
语种	英语
引用统计	被引频次：57[WOS] [WOS记录] [WOS相关记录]
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/90526
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Norwegian Univ Sci & Technol NTNU, Dept Mech & Ind Engn, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway
推荐引用方式 GB/T 7714	Qian GA,Jian,Zhimo,Pan XN,et al. In-situ investigation on fatigue behaviors of Ti-6Al-4V manufactured by selective laser melting[C]INTERNATIONAL JOURNAL OF FATIGUE,2020:105424.

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