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Temperature Effect-Related High and Very High Cycle Fatigue Failure Analysis and Life Estimation of Forged Superalloy

文献类型：期刊论文

作者Lashari MI2; Li W2; Hu ZF2; Li C(李成)1; Cao XB2; Jin YZ2
刊名METALS AND MATERIALS INTERNATIONAL
出版日期2025-02-14
页码18
关键词Nickel-based superalloy Failure mechanism Fatigue crack growth Elevated temperature Life estimation
ISSN号1598-9623
DOI10.1007/s12540-025-01912-z
通讯作者Li, W.(lliw@bit.edu.cn)
英文摘要To analyze the temperature effect-related failure behavior and estimate the fatigue life of forged superalloy, high- and very-high-cycle fatigue experiments were performed. The microstructural characteristics, failure modes, and crack growth behavior are characterized by two- & three-dimensional microscopy techniques, along with electron-backscatter-diffraction (EBSD) analysis. The fractographic analysis demonstrated that surface failure at both 25 degrees C and 650 degrees C is attributed to surface flaws, whereas subsurface and internal failures are primarily driven by faceted cracking, often facilitated by inclusions or pores at 25 degrees C, and solely assisted by large grains at 650 degrees C. EBSD analysis revealed that crack propagation occurs in a transgranular manner, leading to the formation of facets; however, it is impeded by a complex structure comprised of high-angle grain boundaries and twin boundaries. In addition, under the influence of both temperatures, the threshold values for small as well as long cracks are elucidated. Finally, a fatigue life assessment approach that accounts for primary defects and different temperatures is established, and the prediction results demonstrate a closer alignment with the experimental data.
分类号二类/Q1
WOS关键词NICKEL-BASE SUPERALLOY ; CRACK INITIATION ; BEHAVIOR ; INCLUSIONS ; HARDNESS ; GROWTH
资助项目National Natural Science Foundation of China[52175128] ; National Natural Science Foundation of China[20232501] ; State Key Laboratory for Mechanical Behavior of Materials
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001420985200001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory for Mechanical Behavior of Materials
其他责任者Li, W
源URL[http://dspace.imech.ac.cn/handle/311007/100104]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
2.Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China;
推荐引用方式
GB/T 7714		 Lashari MI,Li W,Hu ZF,et al. Temperature Effect-Related High and Very High Cycle Fatigue Failure Analysis and Life Estimation of Forged Superalloy[J]. METALS AND MATERIALS INTERNATIONAL,2025:18.
APA Lashari MI,Li W,Hu ZF,李成,Cao XB,&Jin YZ.(2025).Temperature Effect-Related High and Very High Cycle Fatigue Failure Analysis and Life Estimation of Forged Superalloy.METALS AND MATERIALS INTERNATIONAL,18.
MLA Lashari MI,et al."Temperature Effect-Related High and Very High Cycle Fatigue Failure Analysis and Life Estimation of Forged Superalloy".METALS AND MATERIALS INTERNATIONAL (2025):18.

入库方式： OAI收割

来源：力学研究所

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