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Effects of embedded spherical pore on the tensile properties of a selective laser melted Ti6Al4V alloy
Meng, L. X.1,2; Ben, D. D.1,2; Yang, H. J.1,2; Ji, H. B.1; Lian, D. L.1; Zhu, Y. K.1; Chen, J.3; Yi, J. L.3; Wang, L.3; Yang, J. B.1,2; Zhang, Z. F.1,2
Corresponding AuthorYang, H. J.(hjyang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
2021-05-20
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume815Pages:11
AbstractSelective laser melting (SLM) is one of the most promising additive manufacturing (AM) technologies in recent years. However, some sub-millimeter defects often appear accidently in SLM specimens, resulting in deterioration of mechanical properties. Therefore, the effects of these defects on the mechanical properties of the SLM materials are significantly important. In this study, the effect of a single spherical defect on the tensile properties was investigated by embedding a spherical pore inside the SLM Ti6Al4V specimens. Different combinations of pore diameters (CYRILLIC CAPITAL LETTER EF100 mu m, CYRILLIC CAPITAL LETTER EF300 mu m, CYRILLIC CAPITAL LETTER EF500 mu m, CYRILLIC CAPITAL LETTER EF1000 mu m) and locations (center, sub-surface, near-surface) were designed to mimic the sub-millimeter printing defects. The results demonstrated that these embedded pores had negligible influence on the elastic modulus and tensile strength but had a noticeable influence on the tensile elongation. With the increase of pore size, the elongation to failure of the specimens tended to be stochastic, stably high and stably low in sequence, which could be related to different fracture modes. The tensile specimens fractured at the embedded pore when the embedded pore size was increased to a critical diameter (approximately CYRILLIC CAPITAL LETTER EF1000 mu m). Concurrently, the location of the embedded pore started to have an obvious influence on ductility, namely, the elongation to failure decreased as the embedded pore became closer to free surface.
KeywordSelective laser melting Ti6Al4V Embedded pore Tensile strength Elongation
Funding OrganizationCOMAC Shanghai Aircraft Manufacturing Co., Ltd ; Youth Innovation Promotion Associationof the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province ; Liao Ning Revitalization Talents Program
DOI10.1016/j.msea.2021.141254
Indexed BySCI
Language英语
Funding ProjectCOMAC Shanghai Aircraft Manufacturing Co., Ltd[COMAC-SFGS-2018-2663] ; Youth Innovation Promotion Associationof the Chinese Academy of Sciences[2017235] ; National Natural Science Foundation of China[51975552] ; Natural Science Foundation of Liaoning Province[2020-MS-007] ; Liao Ning Revitalization Talents Program[XLYC1808027]
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000651212200002
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/161382
Collection中国科学院金属研究所
Corresponding AuthorYang, H. J.; Zhang, Z. F.
Affiliation1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Chinese Acad Sci, Dept Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.COMAC Shanghai Aircraft Mfg Co Ltd, 3115 Changzhong Rd, Shanghai 200436, Peoples R China
Recommended Citation
GB/T 7714
Meng, L. X.,Ben, D. D.,Yang, H. J.,et al. Effects of embedded spherical pore on the tensile properties of a selective laser melted Ti6Al4V alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,815:11.
APA Meng, L. X..,Ben, D. D..,Yang, H. J..,Ji, H. B..,Lian, D. L..,...&Zhang, Z. F..(2021).Effects of embedded spherical pore on the tensile properties of a selective laser melted Ti6Al4V alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,815,11.
MLA Meng, L. X.,et al."Effects of embedded spherical pore on the tensile properties of a selective laser melted Ti6Al4V alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 815(2021):11.
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