Effects of embedded spherical pore on the tensile properties of a selective laser melted Ti6Al4V alloy

doi:10.1016/j.msea.2021.141254

IMR OpenIR

	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
通讯作者	Yang, H. J.(hjyang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2021-05-20
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	815 页码:11
摘要	Selective 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.
关键词	Selective laser melting Ti6Al4V Embedded pore Tensile strength Elongation
资助者	COMAC 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
DOI	10.1016/j.msea.2021.141254
收录类别	SCI
语种	英语
资助项目	COMAC 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研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000651212200002
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/161382
专题	中国科学院金属研究所
通讯作者	Yang, H. J.; Zhang, Z. F.
作者单位	1.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
推荐引用方式 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.