Evolution of phase interface microstructure and its effects on stress rupture property of a 4th generation nickel-based single crystal superalloy after thermal exposure
文献类型：期刊论文
| 作者 | Liu, Pengcheng1,2; Liu, Xingang1; Jiang, Xiangwei1; Li, Hui1; Lou, Langhong1 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2023-02-16 |
| 卷号 | 865页码:13 |
| 关键词 | Single crystal superalloy Thermal exposure Dislocation network Misfit Phase interface Stress rupture property |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2023.144640 |
| 通讯作者 | Liu, Xingang(liuxingang@imr.ac.cn) |
| 英文摘要 | Lattice constants, phase interface microstructure and stress rupture properties of nickel-based single crystal superalloy after thermally exposed at 1100 degrees C for different time were investigated using synchrotron radiation diffraction and transmission electron microscopy techniques. The results show that the lattice constants of gamma and gamma' phase at room temperature decrease and the misfit at room temperature becomes more negative after 200 h exposure, and these parameters remain unchanged after exposure for 500 h. The release of misfit stress during thermal exposure is completed by the transformation from coherent gamma/gamma' interface to semi-coherent interface as well as the formation of misfit dislocation. The misfit dislocation network generated during thermal exposure is mainly rectangular shape, and its formation process is analyzed in detail. Additionally, it is found that the stress rupture lives decrease obviously after thermal exposure, while the morphology and size of interfacial dislocation network of thermally exposed alloys after rupture are very similar with that of unexposed alloy. The relation of gamma' phase morphology and interfacial dislocation network to the stress rupture property deterioration has been discussed. |
| 资助项目 | Science Center for Gas Turbine Project[P2021-A-IV-001-002] ; Na-tional Science and Technology Major Projects of China[2017-VI-0019-0091] ; Na-tional Science and Technology Major Projects of China[J2019-VI-0010-0124] ; Na-tional Science and Technology Major Projects of China[J2019-IV-0006-0074] ; Na-tional Science and Technology Major Projects of China[J2019-VI-0009-0123] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000976851700001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | Science Center for Gas Turbine Project ; Na-tional Science and Technology Major Projects of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177465]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Xingang |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Pengcheng,Liu, Xingang,Jiang, Xiangwei,et al. Evolution of phase interface microstructure and its effects on stress rupture property of a 4th generation nickel-based single crystal superalloy after thermal exposure[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,865:13. |
| APA | Liu, Pengcheng,Liu, Xingang,Jiang, Xiangwei,Li, Hui,&Lou, Langhong.(2023).Evolution of phase interface microstructure and its effects on stress rupture property of a 4th generation nickel-based single crystal superalloy after thermal exposure.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,865,13. |
| MLA | Liu, Pengcheng,et al."Evolution of phase interface microstructure and its effects on stress rupture property of a 4th generation nickel-based single crystal superalloy after thermal exposure".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 865(2023):13. |
入库方式： OAI收割
来源：金属研究所
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