Neutron diffraction study of strain and stress induced by thermomechanical fatigue in a single crystal superalloy
文献类型：期刊论文
| 作者 | E. Wu ; J. Zhang ; B. Chen ; G. A. Sun ; V. Ji ; D. Hughes ; T. Pirling |
| 刊名 | Journal of Physics-Condensed Matter
 |
| 出版日期 | 2008 |
| 卷号 | 20期号:10 |
| 关键词 | nickel-based superalloy local elastic strains base superalloy x-ray internal-stresses mismatch gamma' creep |
| ISSN号 | 0953-8984 |
| 中文摘要 | The relationship between internal stress and thermomechanical fatigue (TMF) in a Ni-based single crystal superalloy grown along the [001] axis was studied by neutron diffraction. The macroscopic internal stress along the loading axis generally increases with the TMF deformation. However, the internal stress in the precipitate gamma' phase increases more significantly than that in the matrix. phase and contributes more to the stress growth. During the TMF, the stress in the gamma' phase is larger than that of the gamma phase, thus the gamma' phase is stretched whereas the gamma phase is compressed along the loading axis. The microstrains in the gamma and gamma' phases also increase during TMF, but the trend does not follow that of the stresses. The evolutions of the internal stresses and microstrains, and the associated microstructure changes, appear to indicate that the failure by TMF is mostly caused by the residual stress concentration in the hardened gamma' phase. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/33196]  |
| 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 | E. Wu,J. Zhang,B. Chen,et al. Neutron diffraction study of strain and stress induced by thermomechanical fatigue in a single crystal superalloy[J]. Journal of Physics-Condensed Matter,2008,20(10). |
| APA | E. Wu.,J. Zhang.,B. Chen.,G. A. Sun.,V. Ji.,...&T. Pirling.(2008).Neutron diffraction study of strain and stress induced by thermomechanical fatigue in a single crystal superalloy.Journal of Physics-Condensed Matter,20(10). |
| MLA | E. Wu,et al."Neutron diffraction study of strain and stress induced by thermomechanical fatigue in a single crystal superalloy".Journal of Physics-Condensed Matter 20.10(2008). |
入库方式： OAI收割
来源：金属研究所
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