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Estimation of the size of GBF area on fracture surface for high strength steels in very high cycle fatigue regime
文献类型：期刊论文
| 作者 | Z. G. Yang ; S. X. Li ; Y. B. Liu ; Y. D. Li ; G. Y. Li ; W. J. Hui ; Y. Q. Weng |
| 刊名 | International Journal of Fatigue
 |
| 出版日期 | 2008 |
| 卷号 | 30期号:6页码:1016-1023 |
| 关键词 | high strength steel very high cycle fatigue granular bright facet (GBF) hydrogen the maximum size of the plastic zone fatigue crack growth rate subsurface crack initiation chromium-bearing steel long-life fatigue n-greater-than-10(7) cycles part ii mechanism failure hydrogen inclusions behavior |
| ISSN号 | 0142-1123 |
| 中文摘要 | The sizes of the "granular bright facet' (GBF) areas on fracture surfaces of specimens subjected to very high cycle fatigue for two high strength spring steels were measured in a field emission scanning electron microscope (FESEM) and compared with the estimated values, and a good agreement was found between the two sets of data. A criterion was proposed to estimate the sizes of GBF areas. It was assumed that when the increment of crack length in one applied stress cycle (numerically equal to crack growth rate, da/dN) is just equal to the plastic zone size in front of crack tip, r(p), the GBF stops developing. It means that hydrogen accumulating in the plastic zone under applied stress influences mostly on the fatigue behaviors which results in the morphology of GBF area quite different from the conventional fatigue fracture surface. The estimated sizes of GBF areas were also in accordance with the sizes measured from fracture surfaces of other high strength steels provided that the hydrogen concentration in those steels was not much higher than that in present spring steels. (c) 2007 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/33280]  |
| 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 | Z. G. Yang,S. X. Li,Y. B. Liu,et al. Estimation of the size of GBF area on fracture surface for high strength steels in very high cycle fatigue regime[J]. International Journal of Fatigue,2008,30(6):1016-1023. |
| APA | Z. G. Yang.,S. X. Li.,Y. B. Liu.,Y. D. Li.,G. Y. Li.,...&Y. Q. Weng.(2008).Estimation of the size of GBF area on fracture surface for high strength steels in very high cycle fatigue regime.International Journal of Fatigue,30(6),1016-1023. |
| MLA | Z. G. Yang,et al."Estimation of the size of GBF area on fracture surface for high strength steels in very high cycle fatigue regime".International Journal of Fatigue 30.6(2008):1016-1023. |
入库方式： OAI收割
来源：金属研究所
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