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Impact fatigue behavior of laser metal deposition 316L stainless steel with an automated impact fatigue system based on split Hopkinson bar technique

文献类型：期刊论文

作者Li, Boli; Zhao, Sihan; Wang, Jianjun; Li PH(李鹏辉); Liu, Yuanmeng; Wang, Ruifeng; Yuan, Kangbo; Gao, Meng; Guo, Weiguo; Guo, Chunhuan
刊名INTERNATIONAL JOURNAL OF FATIGUE
出版日期2024-08-01
卷号185页码:13
关键词Impact fatigue High loading rates Laser metal deposition 316L stainless steel Microstructure
ISSN号0142-1123
DOI10.1016/j.ijfatigue.2024.108370
通讯作者Wang, Jianjun(wangjianjun@tyut.edu.cn) ; Li, Penghui(liph@imech.ac.cn) ; Guo, Weiguo(weiguo@nwpu.edu.cn) ; Guo, Chunhuan(guochunhuan@hrbeu.edu.cn)
英文摘要Repeated impact subjecting on the key components of equipment is always characterized by extremely high loading rate loading, while plastic deformation of most metals depends on loading rate. To ensure the reliability and security of these components, it is necessary to understand the loading rate effect on the fatigue performance. In this study, an automated impact fatigue system based on split Hopkinson bar technique was newly developed to investigate the materials ' impact fatigue behavior. Impact fatigue behavior and non -impact fatigue behavior of laser metal deposition 316L stainless steel were analyzed. The fatigue life decreases with the increasing loading rate, implying the significant loading rate dependence. The compression and fracture toughness tests combined with fractography analysis at high and low loading rates were also conducted to reveal the underlying mechanism of the difference between impact and non -impact fatigue life. Finally, microstructure of the laser metal deposition 316L stainless steel after impact and non -impact fatigue was characterized. It can be concluded that the fatigue crack is apt to initiate under impact fatigue due to the high density of dislocation entanglement, while under non -impact fatigue, a large number of twins are beneficial to delay the fatigue crack initiation.
分类号一类
WOS关键词MECHANICAL-PROPERTIES ; STRAIN-RATE ; DEFORMATION ; TEMPERATURE ; FRACTURE ; DEFECTS ; RANGE
资助项目National Natural Science Foundation of China[12072287] ; National Natural Science Foundation of China[12172245] ; National Natural Science Foundation of China[12372365] ; National Natural Science Foundation of China[11872051] ; National Natural Science Foundation of China[12202149]
WOS研究方向Engineering ; Materials Science
语种英语
WOS记录号WOS:001240544000001
资助机构National Natural Science Foundation of China
其他责任者Wang, Jianjun ; Li, Penghui ; Guo, Weiguo ; Guo, Chunhuan
源URL[http://dspace.imech.ac.cn/handle/311007/95620]  
专题力学研究所_非线性力学国家重点实验室
推荐引用方式
GB/T 7714		 Li, Boli,Zhao, Sihan,Wang, Jianjun,et al. Impact fatigue behavior of laser metal deposition 316L stainless steel with an automated impact fatigue system based on split Hopkinson bar technique[J]. INTERNATIONAL JOURNAL OF FATIGUE,2024,185:13.
APA Li, Boli.,Zhao, Sihan.,Wang, Jianjun.,李鹏辉.,Liu, Yuanmeng.,...&Jiang, Fengchun.(2024).Impact fatigue behavior of laser metal deposition 316L stainless steel with an automated impact fatigue system based on split Hopkinson bar technique.INTERNATIONAL JOURNAL OF FATIGUE,185,13.
MLA Li, Boli,et al."Impact fatigue behavior of laser metal deposition 316L stainless steel with an automated impact fatigue system based on split Hopkinson bar technique".INTERNATIONAL JOURNAL OF FATIGUE 185(2024):13.

入库方式： OAI收割

来源：力学研究所

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