Very high cycle fatigue for GCr15 steel with smooth and hole-defect specimens
文献类型：期刊论文
| 作者 | Lei ZQ(雷铮强) ; Zhao AG(赵爱国); Xie JJ(谢季佳); Sun CQ(孙成奇); Hong YS(洪友士)
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| 刊名 | THEORETICAL & APPLIED MECHANICS LETTERS
 |
| 出版日期 | 2012-05-10 |
| 卷号 | 2期号:3页码:031003 |
| 通讯作者邮箱 | hongys@imech.ac.cn |
| 关键词 | Very high cycle fatigue GCr15 FGA hole-defect experimental research |
| ISSN号 | 2095-0349 |
| 产权排序 | State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China |
| 通讯作者 | 洪友士 |
| 中文摘要 | Very high cycle fatigue (VHCF) properties of a low temperature tempering bearing steel GCr15 with smooth and hole-defect specimens are studied by employing a rotary bending test machine with frequency of 52.5 Hz. Both smooth and hole-defect specimens break in VHCF regime with some difference in fatigue crack initiation. For smooth specimens, a fine granular area (FGA) is observed near the grain boundary in the fracture surface of the specimens broken after 10^7 cycles. But no FGA is observed in the hole-defect specimens broken in VHCF regime, and the VHCF crack does not initiate from the small hole at the surface as it does at low or high cycle fatigue regime. Internal stress is employed to explain the VHCF behavior of these two types of specimens. At last, an advanced dislocation model based on Tanaka and Mura model is proposed to illustrate the internal stress process and to predict fatigue crack initiation life with FGA observed in the fracture region. |
| 英文摘要 | Very high cycle fatigue (VHCF) properties of a low temperature tempering bearing steel GCr15 with smooth and hole-defect specimens are studied by employing a rotary bending test machine with frequency of 52.5 Hz. Both smooth and hole-defect specimens break in VHCF regime with some difference in fatigue crack initiation. For smooth specimens, a fine granular area (FGA) is observed near the grain boundary in the fracture surface of the specimens broken after 10^7 cycles. But no FGA is observed in the hole-defect specimens broken in VHCF regime, and the VHCF crack does not initiate from the small hole at the surface as it does at low or high cycle fatigue regime. Internal stress is employed to explain the VHCF behavior of these two types of specimens. At last, an advanced dislocation model based on Tanaka and Mura model is proposed to illustrate the internal stress process and to predict fatigue crack initiation life with FGA observed in the fracture region. |
| 学科主题 | 疲劳与断裂力学 |
| 分类号 | 二类 |
| 资助信息 | This work was supported by the National Natural Science Foundation of China (11021262 and 11172304), and the National Basic Research Program of China (2012CB937500). |
| 原文出处 | http://dx.doi.org/10.1063/2.1203103 |
| 语种 | 英语 |
| 公开日期 | 2013-01-16 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/46400]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Lei ZQ,Zhao AG,Xie JJ,et al. Very high cycle fatigue for GCr15 steel with smooth and hole-defect specimens[J]. THEORETICAL & APPLIED MECHANICS LETTERS,2012,2(3):031003. |
| APA | 雷铮强,赵爱国,谢季佳,孙成奇,&洪友士.(2012).Very high cycle fatigue for GCr15 steel with smooth and hole-defect specimens.THEORETICAL & APPLIED MECHANICS LETTERS,2(3),031003. |
| MLA | 雷铮强,et al."Very high cycle fatigue for GCr15 steel with smooth and hole-defect specimens".THEORETICAL & APPLIED MECHANICS LETTERS 2.3(2012):031003. |
入库方式： OAI收割
来源：力学研究所
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