| In situ TEM study of the effect of M/A films at grain boundaries on crack propagation in an ultra-fine acicular ferrite pipeline steel | |
| Zhong, Y; Xiao, F; Zhang, JW; Shan, YY; Wang, W; Yang, K | |
| Corresponding Author | Zhong, Y(zy@imr.ac.cn) |
| 2006 | |
| Source Publication | ACTA MATERIALIA
 |
| ISSN | 1359-6454 |
| Volume | 54Issue:2Pages:435-443 |
| Abstract | Microstructural refinement of structural materials generally improves their tensile properties but deteriorates their fatigue properties. However, pipeline steels with ultra-fine acicular ferrite (UFAF) possess not only high strength and toughness, but also a low fatigue-crack-growth rate (FCGR) and long fatigue-propagation life. In this paper, the micro-fracture mechanisms of an UFAF pipeline steel are investigated by in situ tensile testing in a transmission electron microscope. The results indicate that a grain-boundary-film structure composed of martensite/austenite could significantly influence the crack propagating behavior in the UFAF steel, consequently lowering the FCGR by enhancing roughness-induced crack closure during cyclic loading. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| Keyword | in situ TEM fatigue crack growth grain boundary structure crack closure pipeline steels |
| DOI | 10.1016/j.actamat.2005.09.015 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000234785200014 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/86202 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhong, Y |
| Affiliation | 1.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China 2.Yanshan Univ, Coll Mat Sci & Engn, Qinhuangdao 066004, Peoples R China |
| Recommended Citation GB/T 7714 | Zhong, Y,Xiao, F,Zhang, JW,et al. In situ TEM study of the effect of M/A films at grain boundaries on crack propagation in an ultra-fine acicular ferrite pipeline steel[J]. ACTA MATERIALIA,2006,54(2):435-443. |
| APA | Zhong, Y,Xiao, F,Zhang, JW,Shan, YY,Wang, W,&Yang, K.(2006).In situ TEM study of the effect of M/A films at grain boundaries on crack propagation in an ultra-fine acicular ferrite pipeline steel.ACTA MATERIALIA,54(2),435-443. |
| MLA | Zhong, Y,et al."In situ TEM study of the effect of M/A films at grain boundaries on crack propagation in an ultra-fine acicular ferrite pipeline steel".ACTA MATERIALIA 54.2(2006):435-443. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment