Tailoring thickness debit for high-temperature fatigue resistance of Inconel 718 superalloy fabricated by laser powder bed fusion

doi:10.1016/j.ijplas.2024.104137

IMR OpenIR

	Tailoring thickness debit for high-temperature fatigue resistance of Inconel 718 superalloy fabricated by laser powder bed fusion
	Ma, Tao 1; Zhang, Bin 1; Lei, Li-Ming 2; Wang, Yuan-Chen 3; Song, Zhu-Man 3; Zhang, Guang-Ping 3
通讯作者	Zhang, Bin(zhangb@atm.neu.edu.cn) ; Lei, Li-Ming(bmhdx76@126.com) ; Zhang, Guang-Ping(gpzhang@imr.ac.cn)
	2024-11-01
发表期刊	INTERNATIONAL JOURNAL OF PLASTICITY
ISSN	0749-6419
卷号	182 页码:17
摘要	The thickness debit often leads to uncertainty regarding the fatigue performance of laser powder bed fusion (LPBF)-fabricated Inconel 718 thin-walled components and restricts the structural design of these components. Aiming to address this issue, fatigue properties of LPBF-fabricated Inconel 718 homogenized at various temperatures were investigated at 650 C-degrees using specimens with different thicknesses. The results reveal a pronounced influence of both the thickness debit and the intricate interplay between the microstructural and geometrical scales of the thin-walled specimens on their fatigue life at 650( degrees)C. The fatigue life of the thin-walled specimens with the same microstructural scale reduces with decreasing the ratio (t/d) of the specimen thickness (t) to the grain length (d). The coupling effect is described by a mechanism model correlated with the geometrical and microstructural scales of the specimens, in which continuous damage mechanics (CDM) and calculation of the yield strength have been considered. Based on the model, a criterion of t/d > 6.2 for the LPBF-fabricated Inconel 718 specimens homogenized at 1100 C-degrees, and t/d > 8.8 for those homogenized at 1065( degrees)C are proven to be satisfied to ensure a longer and more stable fatigue life of the thin-walled specimens serving at 650 C-degrees. Elevating the homogenization temperature from 1065( degrees)C to 1100( degrees)C results in an extension of the fatigue life for specimens of the same thickness. This enhancement is attributed to the improved ability of grains to coordinate local deformation, as well as the reduced prevalence of elongated Laves and other phases, which typically serve as preferential sites for crack initiation and propagation. The finding suggests that the thickness debit in high-temperature fatigue resistance of LPBF-fabricated components can be minimized by tailoring the heat treatment strategy.
关键词	Laser powder bed fusion Inconel 718 High-temperature Thickness debit Fatigue Heat treatment
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; Post-doctoral Fellowship Program of China Postdoctoral Science Foundation
DOI	10.1016/j.ijplas.2024.104137
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2022YFB4601000] ; National Natural Science Foundation of China (NSFC)[52171128] ; National Natural Science Foundation of China (NSFC)[51971060] ; Post-doctoral Fellowship Program of China Postdoctoral Science Foundation[GZC20241763]
WOS研究方向	Engineering ; Materials Science ; Mechanics
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
WOS记录号	WOS:001327934700001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/190364
专题	中国科学院金属研究所
通讯作者	Zhang, Bin; Lei, Li-Ming; Zhang, Guang-Ping
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Key Lab Anisotropy & Texture Mat, Minist Educ, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China 2.TaiHang Lab, 619 Jicui St, Chengdu 610213, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ma, Tao,Zhang, Bin,Lei, Li-Ming,et al. Tailoring thickness debit for high-temperature fatigue resistance of Inconel 718 superalloy fabricated by laser powder bed fusion[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2024,182:17.
APA	Ma, Tao,Zhang, Bin,Lei, Li-Ming,Wang, Yuan-Chen,Song, Zhu-Man,&Zhang, Guang-Ping.(2024).Tailoring thickness debit for high-temperature fatigue resistance of Inconel 718 superalloy fabricated by laser powder bed fusion.INTERNATIONAL JOURNAL OF PLASTICITY,182,17.
MLA	Ma, Tao,et al."Tailoring thickness debit for high-temperature fatigue resistance of Inconel 718 superalloy fabricated by laser powder bed fusion".INTERNATIONAL JOURNAL OF PLASTICITY 182(2024):17.