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Effects of surface roughness and build thickness on fatigue properties of selective laser melted Inconel 718 at 650 degrees C
Wan, H. Y.1,3; Luo, Y. W.2; Zhang, B.2; Song, Z. M.1; Wang, L. Y.1,3; Zhou, Z. J.4; Li, C. P.4; Chen, G. F.4; Zhang, G. P.1
Corresponding AuthorZhang, B.(zhangb@atm.neu.edu.cn) ; Zhang, G. P.(gpzhang@imr.ac.cn)
2020-08-01
Source PublicationINTERNATIONAL JOURNAL OF FATIGUE
ISSN0142-1123
Volume137Pages:13
AbstractEffects 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.
KeywordSelective laser melting Inconel 718 High-temperature fatigue Build thickness Surface roughness
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; project of 'Manufacturing the swirl nozzles of the high pressure turbine by selective laser Melting' ; Fundamental research project of Shenyang National Laboratory for Materials Science
DOI10.1016/j.ijfatigue.2020.105654
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[51771207] ; National Natural Science Foundation of China (NSFC)[51971060] ; project of 'Manufacturing the swirl nozzles of the high pressure turbine by selective laser Melting' ; Fundamental research project of Shenyang National Laboratory for Materials Science[L2019R18]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Mechanical ; Materials Science, Multidisciplinary
WOS IDWOS:000534570200011
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138935
Collection中国科学院金属研究所
Corresponding AuthorZhang, B.; Zhang, G. P.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
4.Siemens Ltd, Corp Technol, Mat & Mfg Qualificat Grp, Beijing 100102, Peoples R China
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,2020,137:13.
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,137,13.
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):13.
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