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Effects of Temperature and Microstructure on Short Crack Growth of Laser Powder Bed Fusion Ni-Based Superalloy

文献类型：期刊论文

作者Zhang, Feng2,3; Li, Yonghua3; Shi T(时涛)2; Wang ZB(王子标)2; Liu WQ(刘文琦)2; Fu, Qiang1; Wu, Changbo1; Qian GA(钱桂安)2
刊名FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
出版日期2025-02-02
页码13
关键词in-situ SEM technology microstructure Ni-based superalloy propagation model short fatigue crack
ISSN号8756-758X
DOI10.1111/ffe.14582
通讯作者Li, Yonghua(yonghuali@163.com) ; Qian, Guian(qianguian@imech.ac.cn)
英文摘要This paper utilized an in-situ electron microscopy technique along with high-temperature fatigue tests conducted at 298, 573, and 923 K to observe the initiation and propagation of short fatigue cracks (SFC) in the nickel-based superalloy GH4169 and to examine changes in grain boundaries. The study examined how temperature and local microstructure affect the growth behavior of SFC in GH4169, which was fabricated using laser powder bed fusion (LPBF). The growth rate of SFC increased with higher temperature and stress amplitude, while the GH4169 alloy exhibited a combination of intergranular and transgranular fractures. Using the modified Paris model, the SFC growth model with Young's modulus (E) as an independent variable successfully predicted the crack propagation rate under various temperature loading conditions.
分类号二类
WOS关键词SMALL-FATIGUE-CRACKS ; BEHAVIOR ; STRENGTH ; DAMAGE ; ALLOY
资助项目National Natural Science Foundation of China ; International Partnership Program for Grand Challenges of Chinese Academy of Sciences[025GJHZ2023092GC] ; [12072345]
WOS研究方向Engineering ; Materials Science
语种英语
WOS记录号WOS:001410733200001
资助机构National Natural Science Foundation of China ; International Partnership Program for Grand Challenges of Chinese Academy of Sciences
其他责任者Li, Yonghua ; Qian, Guian
源URL[http://dspace.imech.ac.cn/handle/311007/98297]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Aero Engine Grp Corp China, Aero Engine Acad China, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing, Peoples R China;
3.Dalian Jiaotong Univ, Sch Locomot & Rolling Stock Engn, Dalian, Peoples R China;
推荐引用方式
GB/T 7714		 Zhang, Feng,Li, Yonghua,Shi T,et al. Effects of Temperature and Microstructure on Short Crack Growth of Laser Powder Bed Fusion Ni-Based Superalloy[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2025:13.
APA Zhang, Feng.,Li, Yonghua.,时涛.,王子标.,刘文琦.,...&钱桂安.(2025).Effects of Temperature and Microstructure on Short Crack Growth of Laser Powder Bed Fusion Ni-Based Superalloy.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,13.
MLA Zhang, Feng,et al."Effects of Temperature and Microstructure on Short Crack Growth of Laser Powder Bed Fusion Ni-Based Superalloy".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2025):13.

入库方式： OAI收割

来源：力学研究所

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