The characteristics of granular-bright facet in hydrogen pre-charged and uncharged high strength steels in the very high cycle fatigue regime
文献类型：期刊论文
| 作者 | Y. D. Li ; S. M. Chen ; Y. B. Liu ; Z. G. Yang ; S. X. Li ; W. J. Hui ; Y. Q. Weng |
| 刊名 | Journal of Materials Science
 |
| 出版日期 | 2010 |
| 卷号 | 45期号:3页码:831-841 |
| 关键词 | subsurface crack initiation chromium-bearing steel long-life fatigue n-greater-than-10(7) cycles part ii mechanism failure inclusions fracture limit |
| ISSN号 | 0022-2461 |
| 中文摘要 | In this study, the effect of hydrogen on fatigue strength of high strength steels in the very high cycle fatigue regime was further discussed. It is found that the calculated results of fatigue strength by modified Murakami's expression are in good accordance with the experimental results in +/- 15% error band. The relationship between fatigue life (N(f)) and the ratio of granular-bright facet (GBF) to inclusion size (root A(GBF)/root A(inc)) for quenching and tempering (QT) specimens and pre-charged specimens by soaking (SK) and cathodic (CD) charging can be approximately expressed by root A(GBF)/root A(inc) = R(GBF)/R(inc) = 0.25N(f)(0.125); however, the value of root A(GBF)/root A(inc) for specimens pre-charged by high-pressure thermal hydrogen charging is obviously greater than that for QT specimens and pre-charged specimens by SK and CD charging at an identical N(f). The stress intensity factor range at the periphery of the GBF, Delta K(GBF), was calculated in this work. It is found that value of Delta K(GBF) is not a constant but approximately proportional to (root A(GBF))(1/3). Besides it is also found that Delta K(GBF) decreases with the increase of hydrogen content. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/31246]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Y. D. Li,S. M. Chen,Y. B. Liu,et al. The characteristics of granular-bright facet in hydrogen pre-charged and uncharged high strength steels in the very high cycle fatigue regime[J]. Journal of Materials Science,2010,45(3):831-841. |
| APA | Y. D. Li.,S. M. Chen.,Y. B. Liu.,Z. G. Yang.,S. X. Li.,...&Y. Q. Weng.(2010).The characteristics of granular-bright facet in hydrogen pre-charged and uncharged high strength steels in the very high cycle fatigue regime.Journal of Materials Science,45(3),831-841. |
| MLA | Y. D. Li,et al."The characteristics of granular-bright facet in hydrogen pre-charged and uncharged high strength steels in the very high cycle fatigue regime".Journal of Materials Science 45.3(2010):831-841. |
入库方式： OAI收割
来源：金属研究所
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