Effects of surface roughness and build thickness on fatigue properties of selective laser melted Inconel 718 at 650 degrees C

doi:10.1016/j.ijfatigue.2020.105654

IMR OpenIR

	Effects of surface roughness and build thickness on fatigue properties of selective laser melted Inconel 718 at 650 degrees C
	Wan, H. Y.; Luo, Y. W.; Zhang, B.; Song, Z. M.; Wang, L. Y.; Zhou, Z. J.; Li, C. P.; Chen, G. F.; Zhang, G. P.
	2020-08-01
Source Publication	INTERNATIONAL JOURNAL OF FATIGUE
Volume	137
Abstract	Effects of the surface roughness and the build thickness on fatigue properties of selective laser melted Inconel 718 were investigated at 650 degrees C. The result indicated that fatigue strength was enhanced by similar to 50% after surface machining and polishing. The thinner un-machined specimens exhibit a longer fatigue lifetime than the thicker ones, while the opposite trend appears in the machined specimens. Finite element simulations reveal that the defect shape has more evident influence on fatigue properties than the defect depth when it is less than 200 mu m. Safety thresholds of the stress concentration factor and the defect depth are 2 and 50 mu m, respectively.
DOI	10.1016/j.ijfatigue.2020.105654
WOS ID	WOS:000534570200011
Citation statistics	Cited Times:5[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/82672
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Wan, H. Y.,Luo, Y. W.,Zhang, B.,et al. Effects of surface roughness and build thickness on fatigue properties of selective laser melted Inconel 718 at 650 degrees C[J]. INTERNATIONAL JOURNAL OF FATIGUE,2020,137.
APA	Wan, H. Y..,Luo, Y. W..,Zhang, B..,Song, Z. M..,Wang, L. Y..,...&Zhang, G. P..(2020).Effects of surface roughness and build thickness on fatigue properties of selective laser melted Inconel 718 at 650 degrees C.INTERNATIONAL JOURNAL OF FATIGUE,137.
MLA	Wan, H. Y.,et al."Effects of surface roughness and build thickness on fatigue properties of selective laser melted Inconel 718 at 650 degrees C".INTERNATIONAL JOURNAL OF FATIGUE 137(2020).

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