High temperature creep and low cycle fatigue of a nickel-base superalloy
文献类型：期刊论文
| 作者 | J. J. Yu ; X. F. Sun ; T. Jin ; N. R. Zhao ; H. R. Guan ; Z. Q. Hu |
| 刊名 | Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2010 |
| 卷号 | 527期号:9页码:2379-2389 |
| 关键词 | Single crystal Ni-base superalloy Creep Low cycle fatigue Fracture characteristic Deformation structure single-crystal superalloys deformation-behavior dislocation-structure anisotropic creep crack-growth mechanisms fracture microstructures gamma'-phase cmsx-4 |
| ISSN号 | 0921-5093 |
| 中文摘要 | The creep and low cycle fatigue behaviour of a nickel-base superalloy was investigated. The creep curves show an obvious primary creep stage followed by a short steady-state creep stage and then an accelerating creep stage leading to failure at 700 degrees C. The 900 degrees C creep Curves demonstrate a shorter primary stage, and a longer accelerating creep stage without steady-state creep stage. The creep and low cycle fatigue properties simultaneously degenerate with increasing temperature. The longer primary creep stage corresponds with the relatively long cyclic hardening during low cycle fatigue at 700 degrees C. The slow cyclic softening is consistent with the prolonged acceleration creep stage at 900 degrees C. The low cycle fatigue deformation is controlled by dislocations moving through gamma matrix channels Controlled by the Orowan mechanism and dislocation loops shearing gamma' precipitates at 700 degrees C, which is similar to the primary creep stage deformation mechanism. Furthermore, dislocation climb, slip and interaction between dislocations and carbides are the dominant creep deformation mechanism as well as the main low cycle deformation mechanism at 900 degrees C. (C) 2010 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/321006/31659]  |
| 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. J. Yu,X. F. Sun,T. Jin,et al. High temperature creep and low cycle fatigue of a nickel-base superalloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010,527(9):2379-2389. |
| APA | J. J. Yu,X. F. Sun,T. Jin,N. R. Zhao,H. R. Guan,&Z. Q. Hu.(2010).High temperature creep and low cycle fatigue of a nickel-base superalloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(9),2379-2389. |
| MLA | J. J. Yu,et al."High temperature creep and low cycle fatigue of a nickel-base superalloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.9(2010):2379-2389. |
入库方式： OAI收割
来源：金属研究所
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