Thermo-mechanical fatigue behavior and life prediction of selective laser melted inconel 718

doi:10.1016/j.msea.2024.147502

IMR OpenIR

	Thermo-mechanical fatigue behavior and life prediction of selective laser melted inconel 718
	Zou, C. L.1; Pang, J. C.1; Li, W. B.1,2; Wang, N.1,3; Feng, Y. Y.1; Li, S. X.1; Zhang, H.2; Zhang, Z. F.1
通讯作者	Pang, J. C.(jcpang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2025
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	919 页码:12
摘要	The thermo-mechanical fatigue (TMF) property and corresponding damage mechanisms of selective laser melted (SLM) Inconel 718 superalloy were investigated systemically. The results show that the TMF life under in-phase (IP) loading is lower than that under out-of-phase (OP) loading, and the life difference gradually decreases with decreasing the strain amplitude. The fatigue cracks mainly exhibit inter-granular cracking characteristics under IP loading, and the delta phase embedded to the grain boundary promotes the creep cavity formation and then causes the fatigue crack propagation. While under OP loading, the fatigue crack is mainly characterized by trans- granular cracking, the oxidation induced crack extends from the specimen surface to the interior. A parameter, known as the shape factor k , has been discovered to exhibit high stability in temperature variations. Given the high stability of the k value and the quantitative relationship between stress and plastic strain range across different loading modes, a rapid prediction method for TMF hysteretic energy based on low cycle fatigue (LCF) has been proposed. Finally, combined with the energy cumulative damage model, the TMF life is successfully predicted. This approach significantly reduces the experimental quantity and complexity required for the TMF life prediction process, demonstrating substantial industrial application value.
关键词	Inconel 718 Selective laser melting Thermo-mechanical fatigue Damage mechanism Fatigue life prediction
资助者	National Natural Science Foundation of China (NSFC) ; Science Center for Gas Turbine Project
DOI	10.1016/j.msea.2024.147502
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[52401181] ; National Natural Science Foundation of China (NSFC)[51871224] ; National Natural Science Foundation of China (NSFC)[52130002] ; National Natural Science Foundation of China (NSFC)[52321001] ; Science Center for Gas Turbine Project[P2022-C-IV-001-001]
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:001356263900001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191365
专题	中国科学院金属研究所
通讯作者	Pang, J. C.; Zhang, Z. F.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China 3.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China
推荐引用方式 GB/T 7714	Zou, C. L.,Pang, J. C.,Li, W. B.,et al. Thermo-mechanical fatigue behavior and life prediction of selective laser melted inconel 718[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2025,919:12.
APA	Zou, C. L..,Pang, J. C..,Li, W. B..,Wang, N..,Feng, Y. Y..,...&Zhang, Z. F..(2025).Thermo-mechanical fatigue behavior and life prediction of selective laser melted inconel 718.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,919,12.
MLA	Zou, C. L.,et al."Thermo-mechanical fatigue behavior and life prediction of selective laser melted inconel 718".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 919(2025):12.