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Crack growth rates and microstructure feature of initiation region for very-high-cycle fatigue of a high-strength steel
Hu YP(胡远培); Sun CQ(孙成奇); Hong YS(洪友士)
2018-08-01
发表期刊FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
卷号41期号:8页码:1717-1732
ISSN8756-758X
摘要The S-N data up to very-high-cycle fatigue (VHCF) regime for a high-strength steel were obtained by fatigue tests under constant amplitude and variable amplitude (VA) via rotating bending and electromagnetic resonance cycling. Crack initiation for VHCF was from the interior of specimens, and the initiation region was carefully examined by scanning electron microscopy and transmission electron microscopy. Crack growth traces in the initiation region of fine-granular-area (FGA) were the first time captured for the specimens under VA cycling by rotating bending. The obtained crack growth rates in FGA were upwards to connect well with those in fish-eye region available in the literature and were associated well with the calculated equivalent crack growth rates in FGA. The observations of profile samples revealed that FGA is a nanograin layer for the specimens under VA cycling, which is a new evidence to support the previously proposed numerous cyclic pressing model.
关键词crack growth rate crack initiation fine-granular-area high-strength steel variable amplitude loading very-high-cycle fatigue
DOI10.1111/ffe.12811
URL查看原文
收录类别SCI ; EI
语种英语
WOS记录号WOS:000437279500006
关键词[WOS]CHROMIUM-BEARING STEEL ; LONG-LIFE FATIGUE ; N-GREATER-THAN-10(7) CYCLES ; ULTRASONIC FATIGUE ; METALLIC MATERIALS ; RESIDUAL-STRESSES ; MECHANISM ; BEHAVIOR ; PROPAGATION ; FAILURE
WOS研究方向Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS类目Engineering ; Materials Science
项目资助者Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22020201, XDB22040503] ; National Natural Science Foundation of China [11572325]
论文分区二类/Q1
力学所作者排名1
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/77841
专题非线性力学国家重点实验室
作者单位1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Hu YP,Sun CQ,Hong YS. Crack growth rates and microstructure feature of initiation region for very-high-cycle fatigue of a high-strength steel[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2018,41(8):1717-1732.
APA 胡远培,孙成奇,&洪友士.(2018).Crack growth rates and microstructure feature of initiation region for very-high-cycle fatigue of a high-strength steel.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,41(8),1717-1732.
MLA 胡远培,et al."Crack growth rates and microstructure feature of initiation region for very-high-cycle fatigue of a high-strength steel".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES 41.8(2018):1717-1732.
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