Investigation of high cycle and Very-High-Cycle Fatigue behaviors for a structural steel with smooth and notched specimens
文献类型：期刊论文
| 作者 | Qian GA(钱桂安) ; Hong YS(洪友士); Zhou CE(周承恩); Hong YS
|
| 刊名 | Engineering Failure Analysis
 |
| 出版日期 | 2010 |
| 卷号 | 17期号:7-8页码:1517-1525 |
| 通讯作者邮箱 | hongys@imech.ac.cn |
| 关键词 | Very-High-Cycle Fatigue Crack Initiation Fisheye Patterns High-Strength Steels Non-Metallic Inclusions Chromium-Bearing Steel Long-Life Fatigue Low-Alloy Steel Crack Initiation Quantitative-Evaluation Mechanism Failure Fractography |
| ISSN号 | 1350-6307 |
| 通讯作者 | Hong YS |
| 中文摘要 | The high cycle and Very-High-Cycle Fatigue (VHCF) properties of a structural steel with smooth and notched specimens were studied by employing a rotary bending machine with frequency of 52.5 Hz. For smooth specimens, VHCF failure did occur at fatigue cycles of 7.1 x 10(8) with the related S-N curve of stepwise tendency. Scanning Electron Microscopy (SEM) was used for the observations of the fracture surfaces It shows that for smooth specimens the crack origination is surface mode in the failure regime of less than 10(7) cycles While at VHCF regime, the material failed from the nonmetallic inclusion lies in the interior of material, leading to the formation of fisheye pattern. The dimensions of crack initiation region were measured and discussed with respect to the number of cycles to failure. The mechanism analysis by means of low temperature fracture technique shows that the nonmetallic inclusion in the interior of specimen tends to debond from surrounding matrix and form a crack. The crack propagates and results to the final failure. The stress intensity factor and fatigue strength were calculated to investigate the crack initiation properties. VHCF study on the notched specimens shows that the obtained S-N curve decreases continuously. SEM analysis reveals that multiple crack origins are dominant on specimen surface and that fatigue crack tends to initiate from the surface of the specimen. Based on the fatigue tests and observations, a model of crack initiation was used to describe the transition of fatigue initiation site from subsurface to surface for smooth and notched specimens. The model reveals the influences of load, grain size, inclusion size and surface notch on the crack initiation transition. (C) 2010 Elsevier Ltd. All rights reserved |
| 类目[WOS] | Engineering, Mechanical ; Materials Science, Characterization & Testing |
| 研究领域[WOS] | Engineering ; Materials Science |
| 关键词[WOS] | HIGH-STRENGTH STEELS ; NON-METALLIC INCLUSIONS ; CHROMIUM-BEARING STEEL ; LONG-LIFE FATIGUE ; LOW-ALLOY STEEL ; CRACK INITIATION ; QUANTITATIVE-EVALUATION ; MECHANISM ; FAILURE ; FRACTOGRAPHY |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [10772178, 10532070, 10721202]; Chinese Academy of Sciences [KJCX2-YW-L07] |
| 原文出处 | http://dx.doi.org/10.1016/j.engfailanal.2010.06.002 |
| 语种 | 英语 |
| WOS记录号 | WOS:000281623500002 |
| 公开日期 | 2011-03-01 ; 2011-03-30 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/43473]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Hong YS |
| 推荐引用方式 GB/T 7714 | Qian GA,Hong YS,Zhou CE,et al. Investigation of high cycle and Very-High-Cycle Fatigue behaviors for a structural steel with smooth and notched specimens[J]. Engineering Failure Analysis,2010,17(7-8):1517-1525. |
| APA | 钱桂安,洪友士,周承恩,&Hong YS.(2010).Investigation of high cycle and Very-High-Cycle Fatigue behaviors for a structural steel with smooth and notched specimens.Engineering Failure Analysis,17(7-8),1517-1525. |
| MLA | 钱桂安,et al."Investigation of high cycle and Very-High-Cycle Fatigue behaviors for a structural steel with smooth and notched specimens".Engineering Failure Analysis 17.7-8(2010):1517-1525. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。