Revealing the effect of Ta on coarsening behavior of γ' phases during thermal exposure at 1000 °C in a Ni-based SX superalloy
文献类型：期刊论文
| 作者 | Gao, Yuting1,2; Cui, Jingping3; Dong, Jiasheng1; Lou, Langhong1 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2025-01-05 |
| 卷号 | 1010页码:12 |
| 关键词 | Tantalum Thermal exposure gamma' coarsening behavior Interfacial energy Particle size distribution Ni-based single crystal superalloy |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2024.176359 |
| 通讯作者 | Dong, Jiasheng(djs@imr.ac.cn) |
| 英文摘要 | To reveal the effect of Ta on coarsening behavior of gamma' phases during thermal exposure at 1000 degrees C in a Ni-based single crystal superalloy, morphology and particle size distributions of gamma' phases as well as misfit dislocations in alloys with varying Ta content are investigated by scanning electron microscope, transmission electron microscope, high resolution x-ray diffraction and atom probe tomography techniques. The results demonstrate that Ta addition accelerates the non-directional coarsening of gamma' phases during thermal exposure at 1000 degrees C. This can be attributed to two aspects. For one thing, Ta addition increases absolute lattice misfit at both room temperature and 1000 degrees C, thereby enhancing interfacial elastic energy as driving force for the non-directional coarsening of gamma' phases. Moreover, to release interfacial elastic strain energy, high-density misfit dislocations are formed. However, the misfit dislocations can be served as channels that facilitate the rapid diffusion of elements, which promoting the non-directional coarsening of gamma' phases. For another, Ta addition improves gamma/gamma' two-phase interfacial energy based on A.J. Adelle's approach, so further accelerating the non-directional coarsening of gamma' phases. Besides, the relationship between Ta addition and coarsening mechanism of gamma' phases is further discussed in detail. It is found that the Ta addition advances transition of particle size distributions from being initially controlled by matrix diffusion to being governed by interface diffusion. |
| 资助项目 | National Science and Technology Major Project[2017-VI-0019-0091] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001348047100001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Science and Technology Major Project |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Dong, Jiasheng |
| 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 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Yuting,Cui, Jingping,Dong, Jiasheng,et al. Revealing the effect of Ta on coarsening behavior of γ' phases during thermal exposure at 1000 °C in a Ni-based SX superalloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2025,1010:12. |
| APA | Gao, Yuting,Cui, Jingping,Dong, Jiasheng,&Lou, Langhong.(2025).Revealing the effect of Ta on coarsening behavior of γ' phases during thermal exposure at 1000 °C in a Ni-based SX superalloy.JOURNAL OF ALLOYS AND COMPOUNDS,1010,12. |
| MLA | Gao, Yuting,et al."Revealing the effect of Ta on coarsening behavior of γ' phases during thermal exposure at 1000 °C in a Ni-based SX superalloy".JOURNAL OF ALLOYS AND COMPOUNDS 1010(2025):12. |
入库方式： OAI收割
来源：金属研究所
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