| Characteristic of interior crack initiation and early growth for high cycle and very high cycle fatigue of a martensitic stainless steel |
| 孙成奇i; Song QY(宋庆元); Zhou LL(周玲玲); Pan XN(潘向南)
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| 通讯作者 | Sun, Chengqi(scq@lnm.imech.ac.cn)
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| 发表期刊 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
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| 2019-06-05
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| 卷号 | 758页码:112-120 |
| ISSN | 0921-5093
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| 摘要 | In this paper, interior crack initiation and early growth are investigated to determine the high cycle and very high cycle fatigue of a martensitic stainless steel by constant and variable amplitude loading fatigue tests. It is shown that the tested material presents a very large fine granular area (FGA) size (72-176 mu m), and the value of the stress intensity factor range for FGA remains almost constant irrespective of the stress amplitude and the fatigue life. The equivalent crack growth rate in FGA is of the magnitude 10(-13)-10(-11) m/cyc as determined by the "tree ring" patterns on the fracture surface under variable amplitude loading. Moreover, transmission electron microscopy shows both refined and coarse grains in the extracted samples beneath the FGA, i.e., there is no inevitable relationship between FGA morphology and refined grains beneath the FGA. Additionally, multi-site crack origins are observed under both constant and variable amplitude loadings. This indicates that the crack tends to initiate from the larger inclusion in the highly stressed region for the inclusion-induced fatigue failure. |
| 关键词 | Very high cycle fatigue
Crack initiation
Crack growth rate
Grain refinement
Multi-site crack initiation
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| DOI | 10.1016/j.msea.2019.04.015
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000471737800015
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| 关键词[WOS] | HIGH-STRENGTH STEELS
; LIFE
; MECHANISM
; PROPAGATION
; PREDICTION
; BEHAVIOR
; MODEL
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| WOS研究方向 | Science & Technology - Other Topics
; Materials Science
; Metallurgy & Metallurgical Engineering
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| WOS类目 | Nanoscience & Nanotechnology
; Materials Science, Multidisciplinary
; Metallurgy & Metallurgical Engineering
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| 资助项目 | National Natural Science Foundation of China[91860112]
; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22020200]
; Innovation Program[237099000000170004]
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| 项目资助者 | National Natural Science Foundation of China
; Strategic Priority Research Program of the Chinese Academy of Sciences
; Innovation Program
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| 论文分区 | 一类
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| 力学所作者排名 | 1
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| RpAuthor | Sun, Chengqi
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/79373
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| 专题 | 非线性力学国家重点实验室
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推荐引用方式
GB/T 7714 |
孙成奇i,Song QY,Zhou LL,et al. Characteristic of interior crack initiation and early growth for high cycle and very high cycle fatigue of a martensitic stainless steel[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,758:112-120.
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| APA |
孙成奇i,宋庆元,周玲玲,&潘向南.(2019).Characteristic of interior crack initiation and early growth for high cycle and very high cycle fatigue of a martensitic stainless steel.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,758,112-120.
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| MLA |
孙成奇i,et al."Characteristic of interior crack initiation and early growth for high cycle and very high cycle fatigue of a martensitic stainless steel".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 758(2019):112-120.
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