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The high-cycle fatigue properties of selective laser melted Inconel 718 at room and elevated temperatures
Li, W. B.1,2; Pang, J. C.2; Zhang, H.1; Li, S. X.2; Zhang, Z. F.2
Corresponding AuthorPang, J. C.(jcpang@imr.ac.cn) ; Zhang, H.(hzhang@epm.neu.edu.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
2022-03-02
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume836Pages:11
AbstractAero-engine turbine disk is always subjected to cyclic loading at room and elevated temperatures. Therefore, as one of the typical high-temperature materials, selective laser melted Inconel 718 superalloy was chosen to perform high-cycle fatigue tests at 25 degrees C, 450 degrees C and 650 degrees C and investigate the effect of temperature on fatigue damage mechanism. The locations of fatigue crack initiation are surface and subsurface defects at room temperature, and become subsurface and internal facets at elevated temperatures. An analyzed stress intensity factor and El-Haddad model were performed to assess the effect of defects on fatigue performance at room temperature. By means of electron back scattered diffraction, the fatigue damage mechanisms at elevated temperatures were elucidated. Based on the general relationship between fatigue and tensile strengths of metallic materials, an accurately quantitative relationship among fatigue strength and temperature was proposed.
KeywordSelective laser melting Inconel 718 Elevated temperature fatigue Damage mechanism Fatigue strength prediction
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Natural Science Foun-dation of Liaoning Province
DOI10.1016/j.msea.2022.142716
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[51871224] ; National Natural Science Foundation of China (NSFC)[52130002] ; Natural Science Foun-dation of Liaoning Province[20180550880]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000761748800002
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173402
Collection中国科学院金属研究所
Corresponding AuthorPang, J. C.; Zhang, H.; Zhang, Z. F.
Affiliation1.Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Li, W. B.,Pang, J. C.,Zhang, H.,et al. The high-cycle fatigue properties of selective laser melted Inconel 718 at room and elevated temperatures[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,836:11.
APA Li, W. B.,Pang, J. C.,Zhang, H.,Li, S. X.,&Zhang, Z. F..(2022).The high-cycle fatigue properties of selective laser melted Inconel 718 at room and elevated temperatures.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,836,11.
MLA Li, W. B.,et al."The high-cycle fatigue properties of selective laser melted Inconel 718 at room and elevated temperatures".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 836(2022):11.
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