Fatigue crack initiation and propagation in an alpha-iron polycrystal
文献类型：期刊论文
| 作者 | Chu, RQ; Cai, Z; Li, SX; Wang, ZG |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2001-08-31 |
| 卷号 | 313期号:1-2页码:64-68 |
| 关键词 | alpha-iron polycrystal cyclic deformation crack initiation and propagation finite element analysis crystal orientation |
| ISSN号 | 0921-5093 |
| 通讯作者 | Chu, RQ() |
| 英文摘要 | The cyclic deformation and crack initiation and propagation of alpha-iron polycrystals have been studied under stress-control with emphasis on the dependence on the stress amplitudes and orientation of grains. The orientations of grains surrounding cracks were determined by the electron backscatter diffraction (EBSD). It was found that cracks did not originate at grain boundaries but along the slip lines intersecting with the free surface at the corner of the specimen. At lower stress amplitude, the crack propagated in a transgranular mode, but at higher stress amplitude the crack propagated in a mixed mode-transgranular mode and intergranular mode. The stress distribution along the loading axis of grains surrounding the crack was calculated using a three-dimensional anisotropic finite element method (FEM). In the present work, it was shown that the crack initiation mainly depends on three factors: higher stress distribution, abundant dislocation sources and less resistance to dislocation motion. (C) 2001 Elsevier Science B.V. All rights reserved. |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000169772900007 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://ir.imr.ac.cn/handle/321006/112620]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Chu, RQ |
| 作者单位 | Chinese Acad Sci, Met Res Inst, State Key Lab Fatigue & Fracture Mat, Shenyang 110015, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chu, RQ,Cai, Z,Li, SX,et al. Fatigue crack initiation and propagation in an alpha-iron polycrystal[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2001,313(1-2):64-68. |
| APA | Chu, RQ,Cai, Z,Li, SX,&Wang, ZG.(2001).Fatigue crack initiation and propagation in an alpha-iron polycrystal.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,313(1-2),64-68. |
| MLA | Chu, RQ,et al."Fatigue crack initiation and propagation in an alpha-iron polycrystal".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 313.1-2(2001):64-68. |
入库方式： OAI收割
来源：金属研究所
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