Duration-affected creep behaviors of Ni-based single crystal superalloys with/without rhenium addition designed for IGT application

doi:10.1016/j.msea.2022.144560

IMR OpenIR

	Duration-affected creep behaviors of Ni-based single crystal superalloys with/without rhenium addition designed for IGT application
	Lu, Fan 1; Lu, Song 1; Antonov, Stoichko 1,2; Li, Longfei 1; He, Siliang 1; Hou, Muchun 1; Wang, Dong 3; Zhang, Jian 3; Feng, Qiang 1
通讯作者	Li, Longfei(lilf@skl.ustb.edu.cn) ; Feng, Qiang(qfeng@skl.ustb.edu.cn)
	2023-02-07
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	864 页码:13
摘要	In this study, the creep behaviors of two Ni-based single crystal superalloys with/without Re addition designed for industrial gas turbine application were investigated at 900 degrees C under a range of applied stresses (200 MPa-330 MPa), and the examinations of the microstructures and dislocation configurations were performed at the minimum creep rate and creep rupture under each condition of both alloys. The results indicated that although the creep lives spanned over thousands of hours under different stresses, dislocations underwent the similar mechanisms including the proliferation and movements by gliding-climbing process in decelerating stage, followed by the progressive increase in dislocations shearing into the gamma ' phases until creep rupture in each alloy. This led to a special rafting regime which was characterized by the sluggish formation of the rafting structure in the present superalloy, considering the relatively lower gamma ' volume fraction, lower lattice misfit, and lower elemental diffusion of the experimental superalloys than those of traditional Ni-based superalloys. Thus, the "duration effect" was proposed to describe the strong correlation between the creep duration and microstructural evolution, which showed insensitivity to the applied stress and accumulation strain, resulting in the consistently exponential relationships between the time to the minimum creep rate and the applied stress or creep life of each alloy within a wide range of stresses. The addition of Re gave rise to an inversion of the rafting tendency during high-temperature creep without changing the deformation mechanism under different stresses. Nevertheless, the addition of Re could still enhance the creep property under each stress, which contributes to provide insights for optimizing the alloying design and enhancing long-term reliable service of industrial gas turbine blades.
关键词	Ni-based single crystal superalloys Duration effect Microstructural evolution Deformation mechanism Re effect
资助者	National Science and Technology Major Project ; National Natural Science Foundation of China ; Alexander von Humboldt Foundation
DOI	10.1016/j.msea.2022.144560
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project[J2019 -VI-0010 -0124] ; National Natural Science Foundation of China[51631008] ; National Natural Science Foundation of China[91860201] ; Alexander von Humboldt Foundation
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:000976853400001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：6[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/321006/177444
专题	中国科学院金属研究所
通讯作者	Li, Longfei; Feng, Qiang
作者单位	1.Univ Sci & Technol Beijing, Beijing Adv Innovat Ctr Mat Genome Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China 2.Max Planck Inst Eisenforschung GmbH, Dept Microstruct Phys & Alloy Design, D-40237 Dusseldorf, Germany 3.Chinese Acad Sci, Inst Met Res, Superalloys Div, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Lu, Fan,Lu, Song,Antonov, Stoichko,et al. Duration-affected creep behaviors of Ni-based single crystal superalloys with/without rhenium addition designed for IGT application[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,864:13.
APA	Lu, Fan.,Lu, Song.,Antonov, Stoichko.,Li, Longfei.,He, Siliang.,...&Feng, Qiang.(2023).Duration-affected creep behaviors of Ni-based single crystal superalloys with/without rhenium addition designed for IGT application.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,864,13.
MLA	Lu, Fan,et al."Duration-affected creep behaviors of Ni-based single crystal superalloys with/without rhenium addition designed for IGT application".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 864(2023):13.