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The nature and the mechanism of crack initiation and early growth for very-high-cycle fatigue of metallic materials - An overview
Hong YS(洪友士); Sun CQ(孙成奇); Hong, YS , Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
2017-12-01
发表期刊THEORETICAL AND APPLIED FRACTURE MECHANICS
卷号92页码:331-350
ISSN0167-8442
摘要

Very-high-cycle fatigue (VHCF) is the fatigue damage and failure beyond 107 loading cycles. Crack initiation of VHCF for metallic materials is commonly from the interior of specimens and possesses a unique feature of fish-eye (FiE) containing a fine-granular-area (FGA). It is regarded that FGA together with FiE is the characteristic region of crack initiation for VHCF, because it consumes more than 95% of total fatigue life and the value of stress intensity factor range for this region keeps constant for a given material. The aim of this overview is to summarize the research progress on the crack initiation characteristics and the related mechanisms for VHCF of metallic materials. After a brief introduction to the origination of VHCF research in 1980s, this overview contains the following parts: Characteristics of crack initiation region for VHCF, Characteristic region and intrinsic dimensions of crack initiation for VHCF, The formation mechanism and the model of crack initiation region, The new model of Numerous Cyclic Pressing to explain the formation mechanism of FGA, and Verification of proposed NCP model. In the descriptions, the two essential aspects are especially focused: the nature of crack initiation region for VHCF, and the mechanism for the formation of crack initiation region. (C) 2017 Elsevier Ltd. All rights reserved.

关键词Very-high-cycle Fatigue Fatigue Crack Initiation Fine-granular-area Nanograins High-strength Steels Titanium Alloys
DOI10.1016/j.tafmec.2017.05.002
收录类别SCI ; EI
语种英语
WOS记录号WOS:000417774700033
关键词[WOS]HIGH-STRENGTH STEELS ; CHROMIUM-BEARING STEEL ; REGIME N-GREATER-THAN-10(7) CYCLES ; SEVERE PLASTIC-DEFORMATION ; ION MASS-SPECTROMETRY ; LONG-LIFE FATIGUE ; S-N CURVE ; TI-6AL-4V ALLOY ; PROPAGATION MECHANISM ; ULTRASONIC FREQUENCY
WOS研究方向Engineering ; Mechanics
WOS类目Engineering, Mechanical ; Mechanics
项目资助者National Natural Science Foundation of China(11572325) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22040503 ; XDB22020201)
论文分区一类
力学所作者排名1
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://dspace.imech.ac.cn/handle/311007/72224
专题非线性力学国家重点实验室
通讯作者Hong, YS , Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
推荐引用方式
GB/T 7714
Hong YS,Sun CQ,Hong, YS , Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.. The nature and the mechanism of crack initiation and early growth for very-high-cycle fatigue of metallic materials - An overview[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2017,92:331-350.
APA Hong YS,Sun CQ,&Hong, YS , Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China..(2017).The nature and the mechanism of crack initiation and early growth for very-high-cycle fatigue of metallic materials - An overview.THEORETICAL AND APPLIED FRACTURE MECHANICS,92,331-350.
MLA Hong YS,et al."The nature and the mechanism of crack initiation and early growth for very-high-cycle fatigue of metallic materials - An overview".THEORETICAL AND APPLIED FRACTURE MECHANICS 92(2017):331-350.
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