Effect of microstructure on ultra-high cycle fatigue behavior of Ti-6Al-4V
文献类型：期刊论文
| 作者 | J. H. Zuo ; Z. G. Wang ; E. H. Han |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2008 |
| 卷号 | 473期号:1-2页码:147-152 |
| 关键词 | Ti-6Al-4V alloy ultra-high cycle fatigue microstructure crack initiation life regime structural-materials crack growth mechanisms failure alloys steels propagation frequencies features |
| ISSN号 | 0921-5093 |
| 中文摘要 | The fatigue behavior of Ti-6Al-4V alloy with the bimodal and basketweave microstructures has been investigated. The results show that the S-N curves of Ti-6Al-4V with both microstructures continuously decrease with increasing the number of cycles to failure and have no horizontal asymptote in the regime of 10(5) to 10(9) cycles. SEM observation of fracture surface indicates that the crack initiation sites abruptly shift from surface to interior of the specimen with decreasing the stress amplitude. It is found that the surface crack initiation mainly results from the machining traces. Nevertheless, most of the internal fatigue cracks initiate in the border region of primary alpha-grains in bimodal microstructure or at alpha-beta interfaces in basketweave microstructure, which induced by inhomogeneity of microstructures and incompatibility of deformation between two phases. The size of the internal crack initiation site was evaluated and the dependence of the fatigue life on the location and size of the initiation sites is discussed. (C) 2007 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/33422]  |
| 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 | J. H. Zuo,Z. G. Wang,E. H. Han. Effect of microstructure on ultra-high cycle fatigue behavior of Ti-6Al-4V[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2008,473(1-2):147-152. |
| APA | J. H. Zuo,Z. G. Wang,&E. H. Han.(2008).Effect of microstructure on ultra-high cycle fatigue behavior of Ti-6Al-4V.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,473(1-2),147-152. |
| MLA | J. H. Zuo,et al."Effect of microstructure on ultra-high cycle fatigue behavior of Ti-6Al-4V".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 473.1-2(2008):147-152. |
入库方式： OAI收割
来源：金属研究所
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