Neutron diffraction study of stress and lattice mismatch induced by thermo-mechanical fatigue in single crystal superalloys
文献类型：期刊论文
| 作者 | G. A. Sun ; B. Chen ; H. Chen ; E. D. Wu ; J. Zhang ; V. Ji ; D. Hughes ; T. Pirling |
| 刊名 | Acta Physica Sinica
 |
| 出版日期 | 2009 |
| 卷号 | 58期号:4页码:2549-2555 |
| ISSN号 | 1000-3290 |
| 关键词 | neutron diffraction single superalloy equivalent stress deviatoric stress nickel-based superalloy x-ray-diffraction creep-deformation high-temperature internal-stress base superalloy sc16 evolution specimens behavior |
| 中文摘要 | The center points of the thermo-mechanical fatigued single crystal Ni-based superalloys were measured by neutron diffraction and the results have been treated in two methods: two overlapped peaks and a single peak. The macroscopic equivalent stress, deviatoric stress components, gamma/gamma' phase equivalent stress and lattice mismatch are determined according to the experimental results. The stress results show that the macroscopic equivalent stresses are basically consistent when using two analysis methods I the maximum of macroscopic equivalent stress and deviatoric stress components appeared at thermo-mechanical fatigue that of 100, cycles, and at this point, the micro-defects' such as dislocations, are saturated and the stress of gamma' phase away from the center was reduced remarkably. The calculated results also indicate that the negative lattice mismatch is reduce markedly at the! beginning of the thermo-mechanical fatigue. Subsequently, it increases linearly with the fatigue cycles at the speed 8.1 x 10(-6) per cycle because of the accumulated plastic strain in the matrix. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32300]  |
| 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 | G. A. Sun,B. Chen,H. Chen,et al. Neutron diffraction study of stress and lattice mismatch induced by thermo-mechanical fatigue in single crystal superalloys[J]. Acta Physica Sinica,2009,58(4):2549-2555. |
| APA | G. A. Sun.,B. Chen.,H. Chen.,E. D. Wu.,J. Zhang.,...&T. Pirling.(2009).Neutron diffraction study of stress and lattice mismatch induced by thermo-mechanical fatigue in single crystal superalloys.Acta Physica Sinica,58(4),2549-2555. |
| MLA | G. A. Sun,et al."Neutron diffraction study of stress and lattice mismatch induced by thermo-mechanical fatigue in single crystal superalloys".Acta Physica Sinica 58.4(2009):2549-2555. |
入库方式： OAI收割
来源：金属研究所
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